题目内容
How long do you think it will be _______ scientists succeed in providing a cure for cancer?
| A．when | B．after | C．since | D．before |
D
解析试题分析：句意:你认为还需多长时间科学家就能成功提供治癌症的方法？when当……时候；after在……之后；since自从；it will be some time before...再过多长时间就。根据句意故选D。
考点：考查固定句式的用法。
点评：本题难度适中。固定句式是近几年高考常出现的一个考查项目，高中阶段的一些句式不是很多，提醒考生在平时多加注意它们的用法及意义。
即学即练: How long is it _______ we visited your mother?
A. when B. after C. since D. before
解析：C。句意：自从我们看望你母亲以来到现在有多长时间了？
____ in the United States, St Louis has now become the 4th largest city.
| A．It is the 24th biggest city |
| B．It was the 24th biggest city |
| C．Before the 24th biggest city |
| D．Once the 24th biggest city |
---You didn’t lock the back door.
一You are wrong．I .
| A．have locked it | B．lock it myself | C．did lock it | D．do lock it |
The organizers promise _________ wins the first prize a chance to go abroad.
| A．who | B．whom | C．whoever | D．whomever |
_____ for the young man to spit in the subway!
| A．How bad manners it is | B．How bad manners they are |
| C．What bad manners they are | D．What bad manners it is |
–-I don’t like this kind of music.
--- __________ . It’s too noisy.
| A．Nor do I | B．Neither am I | C．Nor I do. | D．Neither I am |
Only when I read this story for a second time _________to appreciate its beauty.
| A．did I begin | B．that I begin | C．I began | D．had I begin |
— Don’t you remember my name?
— I’m really sorry. Your name ________ from my mind.
| A．escapes | B．escaped |
| C．will escape | D．has escaped |