【单选题】【消耗次数：1】
Helen believes if a man robs her of five dollars it is the same as if he _____ a hundred.
①
takes
②
will take
③
took
④
has taken
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相关题目
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The young man struggled to _______ where he was at the time the murder took place.
①
reduce
②
respond
③
respond
④
recall
【单选题】
The young man struggled to _______ where he was at the time the murder took place.
①
reflect
②
respond
③
resolve
④
recall
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---I hear Faulen has taken up his business in London. ---Really? He has no business _________ and I’m sure he’ll fail.
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feeling
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idea
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sense
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Her parents objected to ____ that farmer, though he has a lot of money.?
①
her marrying ?
②
marrying ?
③
marry ?
④
her marrying with?
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It is an ____ change that has taken place.
①
amazing
②
attempting
③
awaking
④
amusing
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By the end of last month, she ____ over five hundred letters of congratulation from different parts of the world.
①
would received
②
has received
③
had received
④
receive
【单选题】
By the end of last month, she _____ over five hundred letters of congratulation from different parts of the world.
①
would received
②
has received
③
had received
④
receive
【单选题】
The students union has seen a growing ( ) to over several hundred.
①
crowd
②
public
③
population
④
membership
【单选题】
That man alone over there – who is he?
①
He is a student
②
He is Doctor Took
③
A driver, I suppose
④
He’s drunk
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求下列各事件发生的概率：（1）10把钥匙中有3把能打开门，今任取2把，求能打开门的概率。（2）3人独立去破译一个密码，他们能译出的概率分别为0.2、0.3、0.4，求能将此密码译出的概率。
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10件产品中，有4件次品，任取5个，其中次品数为2个的概率是[填空]
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设随机变量（X,Y）的联合分布律为<img src="https://huaweicloudobs.ahjxjy.cn/4BFBB787A44A4EFEBC282C45FF6D6997.png" title="10.png" alt="10.png"/>已知P{X+Y=1}=P{X=Y}，求a,b的值。
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三萜皂苷的分离常采用[填空1]柱色谱，常用[填空2]为支持剂。
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溶剂提取法中溶剂的选择主要依据[填空1]，[填空2]，[填空3]三方面来考虑。