,涉及数学期望

1.诸葛亮
2.岳飞
3.苏武
4.陆游
不过你的第三句写错了
寄书元有雁,食雪不离羊.
旄尽风霜节,心悬日月光.

否定和半否定在句首要倒装

可以dress oneself
found sb doing 发现某人正在干某事
希望能够帮助楼主哦~

翻译：在校园外找到一间公寓
词组：off campus 在校外,不住校

人类基因组又译人类基因体.是智慧人种的基因组.共组成24个染色体,分别是22个体染色体、X染色体与Y染色体.含有约30亿个DNA碱基对.其中一部分的碱基对组成了大约20000到25000个基因.
全世界的生物学与医学界在人类基因组计划中,调查人类基因组中的真染色质基因序列.发现人类的基因数量比原先预期的更少,其中的外显子,也就是能够制造蛋白质的编码序列,只占总长度的1.5%.
人类基因组是人类基因组计划中提出的概念,人类基因组计划是由美国科学家于1985年率先提出,于1990年正式启动的.美国、英国、法兰西共和国、德意志联邦共和国、日本和我国科学家共同参与了这一价值达30亿美元的人类基因组计划.按照这个计划的设想,在2005年,要把人体内约10万个基因的密码全部解开,同时绘制出人类基因的谱图.

退避三舍 春秋 楚庄王 晋文公
卧薪尝胆 春秋 越王勾践 吴王夫差
围魏救赵 战国 孙膑 庞涓
指鹿为马 秦朝 赵高 秦二世
朝秦暮楚
破釜沉舟 秦朝 项羽
四面楚歌 秦朝 项羽
三顾茅庐 三国 诸葛亮 刘备
草木皆兵 东晋 苻坚 谢石 谢玄
投笔从戎 东汉 班超

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并不代表百度知道知识人的观点
回答：sheleywang
新手
4月16日 21:52 1.inspire
His confident leadership inspired his followers.
The captain's heroic effort inspired them with determination.
The design of the car has inspired many imitations.
2.admire (问题中admine拼写错误)
verb [T]
I admire you.
我佩服你
I admire your courage.
我佩服你的勇气.
Visitors admire Beijing for its beauty.
观光者赞赏北京的美丽.
3.increase
noun [C or U]
With an increase of wealth,the desire of wealth increase.
越有钱越贪
Any increase in production would be helpful.
verb [I or T]
The cost of the project has increased.
4.decrease
verb [I or T]
Our share of the market has decreased sharply this year.
We have decreased our involvement in children's books.
Your hunger decrease as you eat.
吃了东西人就不饿了
noun [C or U]
There has been a steady decrease in the number of visitors.
I haven't noticed much decrease in interest.
5.show
verb [T] showed,shown
Why won't you show me what you've got in your hand?
noun [C]
I have just attended in a fashion show.
6.choose -- chose -- chosen
verb [I or T] chose,chosen
He chose a shirt from the many in his wardrobe.
She had to choose between the two men in her life.
7.share
noun [C or U]
The total bill comes to £80,so our share is £20.
She's not doing her share of the work.
verb [I or T]
Will you share your sandwich with me?
He's not very good at sharing his worries.
8.spend
verb [I or T] spent,spent
We spent a fortune when we were in New York.
I spent a lot of time cleaning that room.
You can spend the night here if you like.
9.call
verb [T + object + noun]
What's that actor called that we saw in the film last night?
verb [I or T]
She called (me) this morning at the office and we had a brief chat.
noun [C]
I got a call from an old college friend last night.
10.come up
come up (BE MENTIONED) -- What points came up at the meeting?
come up (HAPPEN) -- My exams are coming up soon.
come up with sth phrasal verb
to suggest or think of an idea or plan:
She's come up with some amazing scheme to double her income.
11.tie…to
to relate to or connect to:
Is the allergy tied to dairy products,for example?
比如,过敏反应与奶制品有关吗?
12.add…to
Her colleagues' laughter only added to (= increased) her embarrassment.
She's added a Picasso to her collection.
她的藏品又添了一幅毕加索的画.
13.fasten…to
I fastened the sticker to the windscreen.
我把贴纸固定在挡风玻璃上.
14.be adout to…
We are about to start.我们马上就要开始啦.
15.compare…with…
Compare some recent work with your older stuff and you'll see how much you've improved.
This road is quite busy compared to/with ours.
Instant coffee just doesn't compare with freshly ground coffee.
速溶咖啡比不上现磨咖啡.
16.keep sth./sb.+adj./doing
Keep your eyes open.
Don't keep such a little boy studying all day long.
Toddlers don't need expensive toys and games to keep them amused.
揪错 ┆ 评论 ┆ 举报

因为ABC共线
所以可设AB=tAC
即OB-OA=t(OC-OA)
整理一下得OB=(1-t)OA+tOC
（以上都是指向量）
所以a1=1-t,a200=t
所以a1+a200=1
S200=200(a1+a200)/2=100

早忘记了

y=1/2(x²-12x)+21 先把二次项,一次项放到括号里,二次项的系数要化为1
=1/2(x²-12x+36) -1/2×36 +21 再在括号里加上一次项系数的一半的平方
因为多加了1/2 ×36 ,∴在括号多面要减去相应的值
=1/2(x-6)² +3 括号内的写成完全平方式,外面的二项合并