If Trial 4 had been extended, at approximately what time would 0.45 mL of 0 2 have reacted?A.70 secB.140 secC.240 secD.270 sec
题目
If Trial 4 had been extended, at approximately what time would 0.45 mL of 0 2 have reacted?
A.70 sec
B.140 sec
C.240 sec
D.270 sec
相似考题
更多“If Trial 4 had been extended, at approximately what time would 0.45 mL of 0 2 have reacted?A.70 secB.140 secC.240 secD.270 sec”相关问题
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第1题：
The rice ______ if you had been more careful.
A. would not be burning
B. would not burn
C. would not have been burnt
D. would not burnt
正确答案：C
这是一个表示与过去事实相反的虚拟条件句。
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第2题：
一If he________，he __________that food.
一Luckily he was sent to the hospital immediately.
A. was warned;would not take
B. had been warned;would not have taken
C. would be warned; had not taken
D. would have been warned; had not taken
参考答案B
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第3题：
Perhaps the experiment _____ by this time tomorrow.
A、has been done
B、will have been bone
C、will do
D、would have done
参考答案：B
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第4题：
He must have had an accident, or he _____ then
A:would have been here
B:would be here
C:should be here
D:had just had
正确答案：C -
第5题：
If only it ()so cold, perhaps I, too, ()more initiative.
A、had been,have shown
B、have been,would show
C、had’t been,cound't have shown
D、had't been,could have shown
参考答案：D
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第6题：
Which of the following conditional clause is a real condition________?A.If I had time, I would study French
B.If I have time, I will study French
C.If I had had time, I would have studied French
D.If I should have time, I would study French
答案：B
解析：条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设或实际可能性不大的甚至完全不可能发生的情况，故采用虚拟语气。
A选项中，if+主语+一般过去时表示与现在事实相反，为虚拟语气；B选项中，if引导的是一个一般现在时的条件状语从句，为真实条件句；C选项中，if+主语+had done表示与过去事实相反，为虚拟语气；D选项中，if+主语+should do表示与将来事实相反，为虚拟语气。题干意为：下列条件句中那个是真实条件，所以答案选B。
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第7题：
Had Paul received six more votes in the last election, he ________ our chairman now.
[A] must have been
[B] would have been
[C] were
[D] would be
正确答案：D
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第8题：
I ______ to the meeting on time, but I had a flat tire on the way.
A. would be
B. would have been
C. were
D. had been
正确答案：B答案为B 我本来应该按时到会的，但是路上我的车胎没气了。情态动词would+现在完成式表示本来应该怎样，实际上并没有做到。
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第9题：
He must have had an accident，or he ______ then．
A.would have been here
B.should be here
C.had to be here
D.would be here
正确答案：A
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第10题：
If the whole operation__________beforehand,a great deal of time and money would have been lost.A.was not planned
B.has not been planned
C.had not been planned
D.were not planned答案：C解析：【考情点拨】考查虚拟语气。【应试指导】句意：如果事先没有计划好整个运作，大量的时间和金钱将会流失。由would have?been lost可知此处表示与过去事实相反的虚拟语气．从句中应使用“had+过去分词”。 -
第11题：
单选题Apart from special circumstances，the value of the goods for which compensation must be made，if they have been lost or damaged，（）that which they would have had at the time and place at which they ought to have been delivered in proper condition.Acontains
Bremains
Chas
Dis
正确答案： B解析： 暂无解析 -
第12题：
单选题______,everything would have been all right.AHe had been there
BHere he had been
CBeen here he had
DHad he been here
正确答案： A解析： -
第13题：
Anders Moberg thought that if his salary had been announced earlier, _____.
［A］ the board’s position would have become less difficult
［B］ he would have agreed to the contract with Ahold
［C］ more time could have been devoted to his recovery plan
［D］ the shareholders wouldn’t have strongly opposed
正确答案：A本题考查推理引申。注意题干中if条件句中用的是虚拟语气，因此正确选项应是一种未能实现的结果。第四段提到安德斯·莫博格批评公司非执行董事没有接受他在5月份公布薪酬的建议。第六段引用他的话中又提到，“我真希望监事会5月份已经公布这个薪酬来避免这样的情形(监事会处境困难)”。因此［A］项正确。
第四段末句中when引导的时间状语从句说明5月份的时候他已同意签定合同。因此［B］项不是虚拟结果。文中未把“薪酬”与“复兴计划”联系起来说明两者的相互影响，因此［C］项无从得知。第八段提到股东反对给莫博格的薪酬，但没有说明是因为公布时间造成的，因此我们无法得出公布早一些，股东就不会反对。［D］项无从推出。
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第14题：
If he()that the mushroom was poisonous, he ()it.Luckily he was sent to the hospital immediately.A、was warned, would not eat
B、had been warned, would not have eaten
C、would be warned, had not eaten
D、would have been warned, had not eaten
答案：B
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第15题：
If they ____ earlier than expected, they ____ here now.A. had started, would be
B. started, might be
C. had started, would have been
D. will start, might have been
参考答案：A
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第16题：
The goods ()shipped already if your L/C had arrived by the end of December last.
A、would be
B、must have been
C、had been
D、would have been
参考答案：D
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第17题：
The soup ________ better if it had had less salt.A. will be
B .would be
C. will have been
D. would have been
参考答案：D
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第18题：
I would have told him the answer had it been possible, but I have been so busy then.()
正确答案:错
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第19题：
Had I known about this computer program, a huge amount of time and energy .
A．would have been saved
B．had been saved
C．will be saved
D．was saved
正确答案：A
解析： 本题考查虚拟语气。根据句子的倒装特征判断此处是省略了if的虚拟语气，原形是：If I had known about this computer program, a huge amount of time and energy .故选择A。句意为：如果我早知道这个电脑程序，就可以节省大量的时间和精力了。 -
第20题：
Apart from special circumstances，the value of the goods for which compensation must be made，if they have been lost or damaged，______ that which they would have had at the time and place at which they ought to have been delivered in proper condition．
A.contains
B.remains
C.has
D.is
正确答案：D
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第21题：
What if there had been a way to avoid this trade war well before it started, a strategy thatthe conditions that led to the trade war before they became problematic.A、would address
B、had addressed
C、would have addressed
D、addressed答案：B解析：本题考查动词的时态。根据题千已有的谓语动词there had beenaway可看出a way就是指的a strategy,空白处的动词与主句there had beenaway属于同一时间，所以空白处也需用过去完成时。第二种方法，从第二个分句的语义着手。本题千意为:要是我们能在贸易战开始之前，找到一种能有效避免贸易战的策略，使该策略，在引发贸易战的条件变成熟之前，就解决它们。第二分句是指:该项策略要能在they became problematic之前，就解决这些条件。所以，发生在一般过去时之前，即为过去完成时。综合所述，本题选B。 -
第22题：
But for the storm,the anniversary ceremony of the company____.A.would have been held
B.had been held
C.would be held
D.is held答案：A解析：本题主要考察but for引导的虚拟语气，其意为“要不是…… ”。题目意为“要不是暴风雨，公司的周年庆典应该已经举行了”。表示的是对已经完成的情况的假设，所以用过去完成时态should（would）have+过去分词。
考点
虚拟语气 -
第23题：
单选题The judge reacted angrily _____ the suggestion that it had been an unfair trial.Afor
Bon
Cto
Dwith
正确答案： D解析：
react to对……作出反应。react on起作用于。