题目内容
In the last ten years, they _______ three great scientific experiments.
| A．finished | B．have finished | C．had finished | D．have been finished |
B
解析试题分析：句意：在过去的十年，他们已经完成了三项伟大的科学实验。表示自过去某一时刻到说话时这段时间的经历，用现在完成时，选B。
考点：考查时态
冲刺100分1号卷系列答案It is the only time in history that two Nobel Prizes ________ to the same person.
| A．have been given | B．had been given |
| C．have given | D．will give |
Close the door of fear behind you，and you _________ the door offaith open before you．
| A．see | B．have seen | C．will see | D．are seeing |
He ________ two tickets for us before he arrived at the entrance of the cinema.
| A．had reserved | B．has reserved |
| C．was reserving | D．has been reserving |
---What were you doing when I phoned you?
---I had just finished my homework and ______ to take a bath.
| A．started | B．has started | C．was starting | D．had started |
The new secretary is supposed to report to the manager as soon as she ________.
| A．will arrive | B．arrives | C．is arriving | D．is going to arrive |
－Why does the river smell terrible?
－Because large quantities of water______．
| A．have been polluted | B．is being polluted |
| C．has been polluted | D．have polluted |
---Do you have any news about Bob?
---Yeah. We ______ each other quite a lot recently.
| A．have been seeing | B．had been seeing | C．see | D．have seen |