This trend began during the Second World War,when several governments came to the conclusion that the specific demands that a government wants to make of its scientific establishment cannot generally be foreseen in detail。这里when是引导定语从句吗？如果是为什么能用逗号隔开呢...
...ting Stamp Act
(Act), an increasingly concerned nation took firm action to stop the
destruction of migratory (迁徙的) waterfowl and the wetlands so vital to their
survival. Under this Act, all waterfowl hunters 16 years of age and over must
annually purchase and carry a Federal Duck Stamp. The ve...
For decades, ceos have fancied themselves as grand strategists, like generals who believe strategy is to war what plot is to the play. 划下划线句子中what怎么理解，做什么成分，句意怎么理解
So can the movements of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.这句话前面是根据上文省略了动词并且倒装了吗，后面when这里为什么有逗...
...为：除生物外，我最喜欢物理。又如：Next
to soccer, I like playing tennis best. 除足球外，我最喜欢打网球。2. Many people have donated that type
of blood; however, the blood bank needs ______. (北京卷)A. some B. less C. much D. more【解析】答...
The Aswan Dam, for example, stopped the Nile flooding but deprived Egypt of the fertile silt that floods left—all in return for a giant reservoir of disease which is now so full of silt that it barely generates electricity.请问：这里的 All 怎么和后面的短语衔接呀？
If anyone had told me three years ago that I would be spending most of
my weekends camping, I would have laughed heartily. Campers,in my eyes,were
people who enjoyed insect bites,ill-cooked meals, and uncomfortable sleeping
bags. They had nothing in common with me. 老师，在上面条件状语从...
...？What if the train is late? 火车要是晚点会怎么样呢？What if you don’t pass your
exams? 要是考试不及格怎么办？What if we can’t get tickets?
我们要是搞不到票怎么办？(2)表示建议：意思是“…怎么样”。如：What if you join us for
lunch? 跟我们...
...ersation till tea was brought in. The Colonel asked for a whisky-and-soda."You'd better have one too, Amy," he said."No; I prefer tea."This was the first suggestion that anything untoward had happened. 为什么上面最后一句:肯定句中却使用了anything ？为什么不是something呢？如...
...t was just that(1) which had most
disconcerted me in my dealings with him. When people say they do not care what
others think of them, for the most part they deceive themselves. Generally they
mean only that they will do as they choose, in the confidence that(2) no one
will know their vagaries; and ...