______ to smoking for a considerably long time, he has much difficulty quitting it.
| A．Having been addicted | B．Being addicted |
| C．To have been addicted | D．Having addicted |
_______ makes a scientific achievement important?
| A．It is what that | B．Is it that what | C．What is it that | D．What it is that |
He made another wonderful discovery, _____ of great importance to science.
| A．which I think is | B．which I think it is | C．which I think it | D．I think which is |
第二部分:英语知识运用(共两小节,满分45分)
第一节:语法和词汇知识(共15小题;每小题1分,满分15分)
You know nowadays ____ good knowledge of foreign language is ____ must in finding a job.
| A．a, the | B．the, a | C．a, \ | D．a, a |
_______ that all mountain roads were closed.
| A．So the dangerous weather became |
| B．So dangerous did the weather become |
| C．So dangerous became the weather |
| D．The dangerous weather became so |
She was _______ reading a novel and didn’t notice the coming car.
| A．occupied to | B．buried in | C．absorbed on | D．engaged to |