Stronger than FM radio signals, these RF waves are still a billionth theintensity of known carcinogenic radiation like X-rays.本句中 a billionth theintensity 这几个单词连用,比较奇怪,billionth为什么后面直接可以跟名词呢?请教老师了,谢...
_______ did you beginto study French? I ________ to study French when I was seven.A. When, begin B. When, began C. While, beginning D. While, was beginning.这个选什么?为什么?能分析下吗?谢谢!
_____, corrupt officials can often manage to deceive their seniors into believing their feignedinnocence.A. To be good at putting on a show B. Good at putting on a showC. Them good at putting on a show D. Being good at putting on a show可以回答一下,这道题...
Fifty years ago parents still asked boys if they wanted to grow up to be president, and asked it not jokingly but seriously. Many parents who were hardly more than paupers still believed their sons could do it. Abraham Lincoln had done it. We were only sixty-five years from Lincoln. Many a grandfath...