Unit 3 Computers Language points课时作业

1.-How impressive John's painting is!

-Actually，it was 2 years after he retired ________ he started to learn drawing.

A.before B.since

C.until D.that

答案　D　[--约翰的画真令人赞叹！--事实上，他是在退休两年后开始学画画的。这是一个强调句，被强调部分是时间状语2 years after he retired。故选D。]

2.-The new machines have arrived and are being tested in the workshop.

-I'm glad we ________ them in the years ahead.

A.will be operating B.have been operating

C.would be operating D.had been operating

答案　A　[--新机器已经到了，正在车间内测试。--我很高兴接下来的几年里我们会使用它们。根据句意可知，因为现在机器还没正式运行，是要在将来投入使用的，因此用将来进行时。即A项正确。]

3.The Palace of Versailles，France's national treasure，has ________ many changes in its centuries-long history while keeping its beauty.(2018·苏锡常镇四市高三教情调研二)

A.gone through B.taken on

C.led to D.showed off

答案　A　[句意：凡尔赛宫是法国的国宝，于数个世纪的历史中在保持其美感的同时也历经了许多变化。go through "经历"，符合语境。take on "呈现出，承担"；lead to "通向，导致"；show off "炫耀"。]

4.The important thing in life is to have a great aim，and the ________ to achieve it.

C.determination D.satisfaction

答案　C　[句意：在生活中重要的是要有伟大的目标以及实现它的决心。acquisition "获得物，获得"；comprehension "理解"；determination "毅力，决心"；satisfaction "满足，满意"。]

5.The infrastructure of a country is ________ makes everything run well，including