secondary school in the US usually covers seven years,grades

mxy07312022-10-04 11:39:546条回答

secondary school in the US usually covers seven years,grades six to twelve 这句子里 cover 为什么要加s变 covers?
还有 light travels faster than sound 那个travel为什么要加s?

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共6条回复
苏佚 共回答了15个问题 | 采纳率93.3%
英语语法中,当句子的主语是单数名次或者代词的时候,句子的谓语动词要加 s,你给的两个句子中的主语--secondary school 和 light 都是单数名词,所以谓语动词 cover 和 travel 需要加s.如果不懂可以再问.
1年前
唐风颂 共回答了49个问题 | 采纳率
因为主语(school、light)是单数,所以谓语动词要加s。
1年前
俱留孙 共回答了1个问题 | 采纳率
靠,还要加个初中英语问题,老实说我也才大学毕业一年半,英语六级,我都忘干干了,还犹豫是不是第三人称。哎,现在水平不及初中了
1年前
半边书生 共回答了1个问题 | 采纳率
第二个问题是一般真理,在英语语法中一般真理使用一般现在时,而light是不可数的所以作为单数第三人称作主语要加s
1年前
超薄透气 共回答了1个问题 | 采纳率
因为travel和cover为动词,但是US和light为单数,因为动词在名词单数后要接S或者ES,所以travel和cover要变成travels和covers
1年前
哈瓦那2 共回答了3个问题 | 采纳率
因为你的主语表示的是单数,动词就要加s
1年前

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电子在原子中的运动状态,可n,l,m,ms四个量子数来描述.
(一)主量子数n
主量子数n是用来描述原子中电子出现几率最大区域离核的远近,或者说它是决定电子层数的.主量子数的n的取值为1,2,3…等正整数.例如,n=1代表电子离核的平均距离最近的一层,即第一电子层;n=2代表电子离核的平均距离比第一层稍远的一层,即第二电子层.余此类推.可见n愈大电子离核的平均距离愈远.
在光谱学上常用大写拉丁字母K,L,M,N,O,P,Q代表电子层数.
主量子数(n)
1
2
3
4
5
6
7

电子层符号
K
L
M
N
O
P
Q

主量子数n是决定电子能量高低的主要因素.对单电子原子来说,n值愈大,电子的能量愈高.但是对多电子原子来说,核外电子的能量除了同主量子数n有关以外还同原子轨道(或电子云)的形状有关.因此,n值愈大,电子的能量愈高这名话,只有在原子轨道(或电子云)的形状相同的条件下,才是正确的.
(二)副量子数l
副量子数又称角量子数.当n给定时,l可取值为0,1,2,3…(n-1).在每一个主量子数n中,有n个副量子数,其最大值为n-1.例如n=1时,只有一个副量子数,l=0,n=2时,有两个副量子数,l=0,l=1.余此类推.按光谱学上的习惯l还可以用s,p,d,f等符号表示.
l 0 1 2 3
光谱符号 s p d F
副量子数l的一个重要物理意义是表示原子轨道(或电子云)的形状.L=0时(称s轨道),其原子轨道(或电子云)呈球形分布(图4-5);l=1时(称p轨道),其原子轨道(或电子云)呈哑铃形分布(图4-6);…
图4-5 s电子云图 4-6 p电子
副量子数l的另一个物理意义是表示同一电子层中具有不同状态的亚层.例如,n=3时,l可取值为0,1,2.即在第三层电子层上有三个亚层,分别为s,p,d亚层.为了区别不同电子层上的亚层,在亚层符号前面冠以电子层数.例如,2s是第二电子层上的亚层,3p是第三电子层上的p亚层.表4-1列出了主量子数n,副量子数l及相应电子层、亚层之间的关系.
表4-1 主量子数n,副量子数l及其相应电子层亚层之间的关系
n
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0
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2
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2s

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2p

3
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3s

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3p

2
3d

4
4
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2
4d

3
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(三)磁量子数m
磁量子数m决定原子轨道(或电子云)在空间的伸展方向.当l给定时,m的取值为从-l到+l之间的一切整数(包括0在内),即0,±1,±2,±3,…±l,共有2l+1个取值.即原子轨道(或电子云)在空间有2l+1个伸展方向.原子轨道(或电子云)在空间的每一个伸展方向称做一个轨道.例如,l=0时,s电子云呈球形对称分布,没有方向性.m只能有一个值,即m=0,说明s亚层只有一个轨道为s轨道.当l=1时,m可有-1,0,+1三个取值,说明p电子云在空间有三种取向,即p亚层中有三个以x,y,z轴为对称轴的px,py,pz轨道.当l=2时,m可有五个取值,即d电子云在空间有五种取向,d亚层中有五个不同伸展方向的d轨道(图4-7).

图4-7 s,p,d电子云在空间的分布
n,l相同,m 不同的各轨道具有相同的能量,把能量相同的轨道称为等价轨道.
(四)自旋量子数ms
原子中的电子除绕核作高速运动外,还绕自己的轴作自旋运动.电子的自旋运动用自旋量子数ms表示.ms 的取值有两个,+1/2和-1/2.说明电子的自旋只有两个方向,即顺时针方向和逆时针方向.通常用“↑”和“↓”表示.
综上所述,原子中每个电子的运动状态可以用n,l,m,ms四个量子数来描述.主量子数n决定电子出现几率最大的区域离核的远近(或电子层),并且是决定电子能量的主要因素;副量子数l决定原子轨道(或电子云)的形状,同时也影响电子的能量;磁量子数m决定原子轨道(或电子云)在空间的伸展方向;自旋量子数ms决定电子自旋的方向.因此四个量子数确定之后,电子在核外空间的运动状态也就确定了.
量子数,电子层,电子亚层之间的关系
每个电子层最多容纳的电子数 2 8 18 2n^2
主量子数n 1 2 3 4
电子层 K L M N
角量子数l 0 1 2 3
电子亚层 s p d f
每个亚层中轨道数目 1 3 5 7
每个亚层最多容纳电子数 2 6 10 14
核外电子的分布:
1. 原子中电子分布原理:
(两个原理一个规则):
(1)、泡利(Pauli)不相容原理
在同一原子中,不可能有四个量子数完全相同的电子存在.即每一个轨道内最多只能容纳两个自旋方向相反的电子.
(2)、能量最低原理
多电子原子处于基态时,核外电子的分布在不违反泡利原理前提下,总是尽先分布在能量较低的轨道,以使原子处于能量最低状态.
(3)、洪特(Hund)规则
原子在同一亚层的等价轨道上分布电子时,尽可能单独分布在不同的轨道,而且自旋方向相同(或称自旋平行).
基态原子中电子的分布
1、核外电子填入轨道的顺序
应用近似能级图,根据“两个原理一条规则”,可以准确地写出91种元素原子的核外电子分布式来.
在110种元素中,只有19种元素原子层外电子的分布稍有例外:
它们是若再对它们进一步分析归纳还得到一条特殊规律——全充满,半充满规则:对同一电子亚层,当电子分布为全充满(P6、d10、f14)、半充满(P3、d5、f7)或全空(P0、d0、f0)时,电子云分布呈球状,原子结构较稳定,可挑出8种元素,剩余11种可作例外.
多电子原子结构
1、核外电子排布三原理
(1)泡利不相容原理:解决各电子层电子数目问题.
◆ 在任何一个原子中,决不可能有两个电子具有四个完全相同的量子数,即在同一个原子中,不可能有运动状态完全相同的电子.
◆ 当 n一定时,L可取(n-1)个值,而在L限定下,原子轨道可有(2L+1)个伸展方向,即(2L+1)个轨道,而每个轨道可容纳两个电子,所以每层最多容纳电子数为
电子层 1 2 3 4
电子数 2 8 18 32
(2)最低能量原理:解决电子排布问题
◆ 多电子原子在基态时,核外电子总是尽可能地先占据能量最低的轨道,以使体系能量最低.
◆ 轨道能级规律
①当角量子数相同时,随主量子数增加,轨道能级升高1s
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A.more;that of other B.bigger;that another
C.smaller;that of any other D.smaller;that of any
c010011年前1
laowu83 共回答了12个问题 | 采纳率75%
C

Last year attended secondary school 怎么填
young31年前1
bingyu0041 共回答了22个问题 | 采纳率100%
不知道你是在哪里需要填这个东西,但是 这句话翻译出来是这样:去年就读的中学
也就是说 应该是填写你去年就读的中学的名字就可以了.
and的用法When September came he would be going off to secondary
and的用法
When September came he would be going off to secondary school and,for the first time in his life,he would not be with Dudley.
这里面的……and,……。and和……,and,……。以及……,and……。有什么不一样?and的位置有什么讲究?
麻烦各位啦
fangfang3511年前1
草鱼爱静 共回答了20个问题 | 采纳率85%
and的九大用法要点

1. 连接两个相同的比较级,表示“越来越……”。如:
It moves faster and faster. 它动得越来越快。
Your work is getting better and better. 你的工作干得越来越好了。
2. 连接两个相同的动词,表示动作的反复或连续。如:
He coughed and coughed. 他咳个不停。
He tried and tried but without success. 他试了又试,但没有成功。
3. 连接两个相同的名词,表示“许多”或“有各种各样的” (即有好的也有坏的)。如:
They talked for hours and hours. 他们谈了很长时间。
There are books and books. 有各种各样的书(即书有好坏之分)。
4. 在口语中用在 come, go, run, stay, stop, try 等之后表示目的(and 在此相当于不定式符号 to)。如:
Come and have a look. 来看一看。
We will try and get one tomorrow. 我们明天设法弄一个来。
We ought to stop and think. 我们应该停下来想一想。
Will you go and fetch me some paper, please? 请你去给我拿点纸来好吗?
以上动词除 try 只能用原形外,其它动词都可有多种形式。如:
正:We stayed and had a drink with him. 我们留下来同他喝 了一杯。
正:We stopped and bought some flowers. 我们停下来买了些 花。
误:He tried and finished the work in time.
注:在 come, go 之后的 and 有时可以省略(尤其在美国英语中)。如:
I’ll come (and) see you later. 我晚些时候再来看你。
5. 用在祈使句后,表示结果,意为“那么”(暗示一种条件)。如:
Work hard and you’ll pass the examinations (=If you work
hard, you’ll pass the examinations). 努力吧,你考试会及格的。
Arrive late once more and you’re fired (=If you arrivelate once more, you’re fired). 再迟到一次,就把你开除。
有时也可以不是用于祈使句后表示结果。如:
One more step and I will fire. 你再动一步,我就要开枪了。
6. 用在 good, nice, fine 等之后,表示“很”、“挺”。如:
It’s nice and cool under the tree. 这树下很凉快。
The book is nice and expensive. 这本书很贵。
7. 在主从复合句中,不要在主句前误加 and。如:
要是下雨,我们就呆在家里。
正:If it rains, we’ll stay at home.
误:If it rains, and we’ll stay at home.
8. 某些用 and 连接的两个词,与汉语顺序相反,不要按汉语词序颠倒过来。如:
rich and poor 贫富 land and water 水陆
right and left 左右 north and south 南北
food and drink 饮食 food and clothing 衣食
9. 比较以下各组句子有无连词 and 的差别:
天气晴朗,我们出去散了步。
正:The weather being fine, we went out for a walk.
正:The weather was fine, and we went out for a walk.
教室里包括老师有五个人。
正:In the classroom there are five people, the teacher included.
正:In the classroom there are five people, and the teacher was included.
他有两个小孩,都很顽皮(from www.***.com)。
正:He has two children, both of whom are naughty.
正:He has two children, and both of them are naughty.
英语翻译official results of the general secondary school leaving
英语翻译
official results of the general secondary school leaving exam.
lingxiao12291年前5
lpgwyx123 共回答了15个问题 | 采纳率93.3%
通用高中毕业考试的官方成绩单(估计就是会考的成绩单吧)
In Beijing Sunshine Secondary School ,there are l___ for s__
In Beijing Sunshine Secondary School ,there are l___ for s___
靓靓小白1年前1
kriqi2007 共回答了18个问题 | 采纳率83.3%
lessons students
She is a student at(还是in) Sushine Secondary school He studie
She is a student at(还是in) Sushine Secondary school He studies at(还是in)Sushine Secondary school
我不太清楚介词用什么 谁能清楚些的告诉我
巨人赵兴龙1年前1
S我不是精灵 共回答了21个问题 | 采纳率81%
第一个是in ,in Sushine Secondary school 是介词短语做定语,修饰a student ,第二个是at,at Sushine Secondary school 是状语,表示学习的地点.
英语翻译We are looking for teachers for our private secondary sc
英语翻译
We are looking for teachers for our private secondary school in Nigeria.This is
a Christian school and we are looking for Christian teachers.Accommodations are
provided and salaries can be discussed.Volunteers are welcome to apply but
those with teaching qualifications and experience will be first chosen.
Subjects:English,French or Art.Those who teach other subjects are also
welcome.
thedopefiend1年前1
泗县 共回答了17个问题 | 采纳率94.1%
We are looking for teachers for our private secondary school in Nigeria.This is
a Christian school and we are looking for Christian teachers.Accommodations are
provided and salaries can be discussed.Volunteers are welcome to apply but
those with teaching qualifications and experience will be first chosen.
Subjects:English,French or Art.Those who teach other subjects are also
welcome.
我们在尼日利亚的一所私立中学正在招募教师,这是一所基督教学校,我们要招募的是基督徒教师,有住宿的提供,工资可以面议.欢迎志愿者申请,但有教学资历和经验者将会是首选.
科目:英语、法语答艺术.那些教其它科目的也一样欢迎.
New District Experimental Secondary School怎么读(音标+谐音)
丢了手机的人1年前1
对镜叹月 共回答了18个问题 | 采纳率94.4%
牛 '第四萃特 一克斯佩瑞'闷头儿 '色根的瑞 思'古尔
some students of Beijing Sunshine Secondary School are wonde
some students of Beijing Sunshine Secondary School are wondering whether it's______(safety)to live on Mars than on Earth
wwanghuiming1年前1
陈春似 共回答了13个问题 | 采纳率92.3%
safe
综合练习(二)6It is not necessary that a secondary school graduate
综合练习(二)6
It is not necessary that a secondary school graduate _____ an entrance exam to be admitted to an American university.
a.passes
b.pass
为什么选择b而不选择a?
我很困惑.
创恒达书架1年前2
秦人蜀客 共回答了21个问题 | 采纳率95.2%
其实这个句子是虚拟语气,pass前面省略了一个should,完整句子应该是
It is not necessary that a secondary school graduate should pass an entrance exam to be admitted to an American university.
一般以It's (not) necessary,It's suggested that后面加的句子都是省略了should的,高中英语常见题型,小心小心~
任务型阅读(满分10分)A technical secondary school in Nanjing, east Ch
任务型阅读(满分10分)
A technical secondary school in Nanjing, east China’s Jiangsu province, planned to order Korean-style school uniforms for students, but parents opposed the move, believing that the new uniforms looked too good and would encourage early romances among the students, the Jinling Evening Paper reported Monday.
Parents
“My daughter was so excited about the Korean-style uniform, saying it’s her dream to wear mini-skirt to school every day,” a mom surnamed Cheng complained. “My daughter also called her classmates to talk about how handsome the boys looked in the uniform!”
Cheng looked on the Internet and found that most Korean schoolboy uniforms are similar to western suits. “They are so handsome! My daughter is a fan of Korean fashion, that’s why she is crazy about the uniform!” Cheng said. “If the students wear such beautiful uniforms, how can they study well? I prefer the sports wear which makes me think of health and positive thinking.”
School
“The plan to change the current school uniform from sports wear has been cancelled,” an employee of the school told the Jinling Evening Paper.
“The students dislike the current uniform, so the school took advice from the students last November, knowing that most of students prefer Korean-or Japanese-style school uniforms. We know cities like Shanghai and Guangzhou have changed their sports wear school uniforms to more fashionable uniforms,” an employee surnamed Lin said.
“However, we had to stop the plan because many parents are strongly against it. Some parents think it’s just a way for the school to make money, and others think the new uniforms will take students’ attention away from their studies,” Lin said.
When asked about the possibility of problems with early romance between students because of the more fashionable uniforms, Lin said he hadn’t considered it. He, however, agreed that the Korean-style uniform makes the students more charming.
Students
The students are very disappointed about the school’s final decision. They think the sports wear uniforms make them look androgynous (难分性别).
They said the Korean-style uniform has many advantages such as raising interest in class; lifting confidence; improving solidarity and creating good temperaments.
As for concerns about romance, the students believe that love is love and bears no relationship to the uniform.
Education department
“We don’t have a unified (统一的) standard for school uniforms. The schools can choose their own styles. Either sports wear or uniforms are ok,” an official from the Nanjing Bureau of Education said.
Title
Do pretty school uniforms lead to early romance?
Event
A technical secondary school planned to order Korean-style school uniforms for students.
Different (71)_____ to it
Parents are strongly (72)______ the move.
◆With such beautiful designs, the new uniforms might
(73)__________ early romances between boys and girls.
◆In the new uniforms, students will fail to focus their
(74)_________ on their studies.
◆It is just a way for the school to make money.
Students are
in 75)______ of the move.
◆The sports wear uniforms make them look androgynous.
◆Korean-style uniform can make them more (76)_________
and more interested in class as well as improving
solidarity and creating good temperaments.
Two responses
From the school
◆The students dislike the current uniform.
◆More (77)__________ school uniforms are allowed in
some big cities in China.
◆The school spokesman Lin said they hadn’t taken the
possibility of early romance into (78)_________, though
he agreed the Korean-style uniform would make the
students more charming.
From the education department
There is no unified standard for school uniforms, so the schools can choose their own styles.
Result
The school had to (79)________ the plan and the students felt (80)_________.
g5sh1年前1
enenen_1314 共回答了21个问题 | 采纳率90.5%
71. attitudes 72. against 73. encourage / cause 74. attention / mind
75. favo(u)r 76. confident 77. fashionable 78. consideration / account 79. cancel/stop 80. disappointed

fine schooling,be it primar-level,secondary-level or tertiar
fine schooling,be it primar-level,secondary-level or tertiary-level ,这句话开头的be哪来的,什么结构?
MAIDBB1年前1
yinfeng8389 共回答了16个问题 | 采纳率93.8%
果然被我猜对了.你给的这句话是一个从句.完整的句子为(拆分标记以便讨论):
However ,in the new millennium,
[1][it is arguable that fine schooling],
[2][be it primary-level,secondary-level or tertiary-level,]
[3][has five common characteristics.]
这个句子还真是比较高级,很好的一个句子.
首先要说[2]部分是插入语,具体说了什么后面再说.
所以句子只不过是说:it is arguable that fine schooling has five common characteristics.
即:[良好的学校教育有5个共同特点]这种说法是有争议的.
下面看[2]
be it primary-level,secondary-level or tertiary-level.
这是一种特殊语气:【倒装】.也就是把谓语动词提到句首,表示强调!
事实上be it ...= it would/can be...
这句插入语实际上说:不管是小学、中学,还是大学.
全句译为:
良好的学校教育——不论是小学,中学,还是大学——都有5个共同特点,这个说法是有争议的.
how much energy is lost from producers to secondary consumer
how much energy is lost from producers to secondary consumer?
潘驴邓小闲之人1年前2
shtbaijie 共回答了15个问题 | 采纳率100%
这个应该是生物学食物链的内容吧:
(食物链)从生产者到次级消费者的过程中损失了多少能量?
希望回答对你有用
请问为啥选CSecondary and higher education _____ available to all
请问为啥选C
Secondary and higher education _____ available to all high school graduates in this country so far.A.have made B.were made themselves C.have been made D.were made it
wellyu0091年前1
xfengma 共回答了22个问题 | 采纳率100%
so far所以用完成时.
被动语态不用我说了吧.
英语翻译Have not been enrolled in full time post secondary educa
英语翻译
Have not been enrolled in full time post secondary education since before the age of 22 or will complete education before CIC issuance of a Permanent Resident visa.
cat3451年前2
ajun2130 共回答了19个问题 | 采纳率89.5%
在22岁前未曾入学于全日制中等教育学校,或者在加拿大移民局签发永久居留签证前将完成教育(学历).
鸟是primary consumer 还是secondary consumer
鸟是primary consumer 还是secondary consumer
在作食物网,同级内可以互相吃么?比如,鸟吃昆虫,所以鸟是primary consumer,但是昆虫是吃草的,所以它不能算producer,那也算是primary consumer了,那鸟还是primary consumer? or secondary consumer?
上巳1年前1
890098 共回答了16个问题 | 采纳率87.5%
secondary consumer
鸟吃虫,虫吃植物,虫是初级消费者
植物是生产者
Some people choose to stay at secondary school for a further
Some people choose to stay at secondary school for a further two years
小民哥0041年前3
hezi_1984 共回答了20个问题 | 采纳率90%
secondary school
ph.
1.中等学校
有些人选择在中学多呆两年
"Secondary steel GI,EG, CR, HR. HDG, PPGI, CRNGO, steel shee
"Secondary steel GI,EG, CR, HR. HDG, PPGI, CRNGO, steel sheet and coil”
其中的“GI, EG,CR, HR, HDG, PPGI, CRNGO”是什么意思?或者说代表了钢材方面的那种材质吗?急!
绝望鲨鱼片1年前1
spring555 共回答了14个问题 | 采纳率92.9%
GI:galvanized iron 镀锌
EG:electrogalvanizing 电镀锌
CR:Cold Rolling 冷轧
HR:Hot Rolling 热轧
HDG:Hot dip galvanizing 热镀锌
PPGI:Prepainted GI 彩涂板 (镀锌基板的彩涂)
CRNGO:Cold Rolled Non Grain Oriented 无取向(硅钢)
请问secondary和 intermediate的区别,用法的区分~
请问secondary和 intermediate的区别,用法的区分~
看见了类似的用法比如inermediate education 、secondary school
两个同样是“中级的”意思,请问在用法上有什么不同呢?
congchunlong1年前3
fiduc 共回答了21个问题 | 采纳率100%
intermediate指介于两者之间的,secondary指紧跟着的,次要的,强调位于什么之后.intermediate介于elementary,advanced之间;secondary强调跟着elementary,而且secondary的这一用法多见于美式英语.
请问highest secondary school qualification和highest tertiary qu
请问highest secondary school qualification和highest tertiary qulification怎么翻译?
AC_Basara1年前1
梦沙0325 共回答了12个问题 | 采纳率100%
最高的中学资格
最高的三重qulification
英语语法问题After graduated from technical secondary school,I got
英语语法问题
After graduated from technical secondary school,I got my first job on Zhuhai which was provided by my school.
求分析句子成分,以及为什么是graduated
紫色的冰激凌1年前4
桃树下 共回答了23个问题 | 采纳率87%
句子有误:
1.After I graduated from technical secondary school,I got my first job IN Zhuhai which was provided by my school.
或者:
2.After graduating technical secondary school,I got my first job IN Zhuhai which was provided by my school.
Lu hua goes back to her secondary school to visit…
Lu hua goes back to her secondary school to visit…
划分句子成分Lu hua goes back to her secondary school to visit Mr.Wang,her former English teacher,主语谓语,宾语什么的,每个短语在句中代表什么成分?
gysheep1年前1
鬼狱斩 共回答了18个问题 | 采纳率100%
Lu hua goes back to her secondary school to visit Mr.Wang,her former English teacher.
主语:Lu hua
谓语:Goes
宾语:school
这是主句
但是前边这句话是复合句,后边还一句补足句是 To visit mr.wang 是补充目的的.去看王女士.
逗号后边的her former English teacher 是从句修饰复合句中的宾语 mr wang的.
The students in Beijing Sunshine Secondary School have some
The students in Beijing Sunshine Secondary School have some lokers 急
改成一般疑问句并肯定回答
aekkzbi1年前2
hkm19888 共回答了16个问题 | 采纳率93.8%
Do they have some lokers in Beijing Sunshine Secondary School
Yes,they do.
弱弱一说,仅供参考.