C. to have been knowing D. to have known 4、AIDS is said ___ the biggest health challenge to both men and women in that area over the past few years. A. that it is B. to be C. that is has been D. to have been 5、Robert is said ___ abroad ,but I don...
根据题干关键词“a broken bike chain”定位到第二段第二句,向前找其论点句 “He is a teacher at a New Hampshire high school where learning is not something of books and tests and mechanical memorization, but practical. 由该句可知,在他(Mr. Koziaek)任教...
In TMTPost Photo Gallery 047, we invited seven Chinese screenwriters to share their experiences and thoughts with our readers. Some of them have already left a name in the ...
Getting enough vitamins is essential to life. 解析:这句话简化之后就变为A is essential to life. 注意一下:A is essential to B的意思是:A对于B 来说很必不可少。 A所代表的这个Getting enough vitamins中通过它出现的位置是主语的位置,就确定了其名词的身份,再通...
to quickly zero in on its prey has always impressed scientists. But it took a detailed study by Duke University marine biologists S. A. Wainwright, F. Vosburgh, and J. H. Hebrank to find out how the sharks did it. In their study the scientists obse...
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