四点半时,时针与分针的夹角是45度?

Dear Sam,
I am very glad to hear from you and you are welcome to study in our school for half a year. I suggest you buy a bicycles and cycle to school. Cycling is the best mode of transport for student in our school. The bicyles are cheap and parking free and easy. After half a year of your attachment to my school, do pass your bicycles to me

Your greedy friend,
Sucke

Dear classmates,
We have a group of American students coming to our city for cultural exchange program. Our class members will meet them in the Youth Club on Saturday for sports activities.
Would you all pay attention to the following arrangements :
1. Departure time : 8:30a.m.
2. Gathering venue : the main gate of our school,
3. Transport : walk from school to the Youth Club as it is not far away,
4. Activities preparation : sports shoes, T-shirt, adequate water for yourself,
5. Details of activities :
(1) 9:00a.m. Opening ceremony
(2) 9:30a.m. Basket match,
(3) Individual communication with USA students and play sports of your choice,
(4) 12:00noon Lunch in the restaurant of the Youth Club.
6. Return time : Return to school after lunch.
Thanks for your attention and wish you all enjoy this opportunity to meet new friends.

4点是120度
分针每分钟走6度,时针每分钟走0.5度
从4点开始
设经过x分钟时针和分针是60度
0.5x+60+120=6x
5.5x=180
x=360/11
在4时32又11分之8分时是60度

1、鸭子和小鸡 duck and chicken2、摸你的脚 touch your feet3、四点半 half past four4、在隔壁房间 in the room nearby5、去把他找来 go and take him here6、它就在这. It's right here.7、儿女 children8、给我...

The meeting starts at 2:00p.m.and ends at 4:00p.m.(因为表示计划好的事,所以用一般现在时来表示将来时)

没有半点的方位,因为用时间来表示文件只是一个大概的表示方法.

是这样的,因为哈佛大学凌晨四点半的景象就只有一副图片,别人根据这个图片来对应哈佛的训言,写的一篇文章.所以就是我发给你的这个文章了.

4:30
读成
four thirty
或者
half past fou

11时30分-7时40分
=11又6分之3 时 - 7又6分之4 时
=3又6分之5 时
=3时50分
4时30分-1时30分
=4又6分之3 时 - 1又6分之3 时
=3时
则
3时50分+3时=6时50分
答：
一共在学校6时50分

1.两点三刻 a quarter to there,或者two forty five
2.四点半 half past four,或者four thirty
3.六点一刻 a quarter past six,或者six fifeteen

It's 4 o'clock now,I must go home.

On Friday, i went back home on 4 o'clock. When the clock went on to half past 4, my parents didn't come back. No sooner than i had played computer games did they went back. I was in a hurry to shut down the computer and pretending to be doing my homework. When they entered my bedroom, they were so pleased to see that i was busy with my homework. On hearing their praise of me, my face was flushed with embarrassment.

根据题目描述,可以推断出水库蓄水的最大可能值和最小可能值.
最大可能值,一直放到四点半：100*2+200*2.5=700
最小可能值,既然2点时放水速度增加,这时应当没放完,在2点到4点30之间放完.我们假设2点时恰好放完：100*2=200
所以可能值应该是200~700之间.

正好我也是这本资料.我们老师讲过
1.A 2.D
3.翻译下面的句子.
此非吾所以处子也.
译:这不是我用来安顿儿子的地方.
4.原因是:因为环境对儿子成长的影响很大.
5.教益是:近朱者赤近墨者黑,所以要营造一个良好的成长环境.

It's 4:30 pm now. The kids are playing cards game.

egin

题目的意思是：从4点开始,分针追上时针又超过时针120°：
（120+120）/（6-0.5）=43.636分=43分38秒
此刻的时间是4点43分38秒多一点儿.

设是四点X分.
则：
X-4*5-X*(5/60)=60*(60/360)
X-20-X*(1/12)=10
X-X*(1/12)=10+20=30
X*(11/12)=30
X=30*(12/11)
=360/11
=32又(8/11)分
钟面上四点半后时针和分针第一次夹成60°的角是四点32又(8/11)分.