北京市 2015 届高考一轮专题训练 非谓语动词
24. 【2014 北京】 __ carefully if any change occurs when doing experiments in the lab..
A. Observe B. To observe C. Observed D. Observing 【答案】A 25. 【2014 北京】 Last night, there were millions of people _______ the opening ceremony live on TV. A.watch B. to watch C. watched D. watching 【答案】D 28. 【2014 北京】 There are still many problems ______ before we are ready for a long stay on the Moon. A. solving B. solved C. being solved D.to be solved 【答案】D 35.【2014 北京】The film star wears sunglasses. Therefore, he can go shopping without ______.. A. recognizing B. being recognized C. having recognized D. having been recognized 【答案】B 24.【2013 北京】_____the course very difficult, she decided to move to a lower level. A. Find B. Finding C. To find D. Found 24【答案】B 29.【2013 北京】 When we saw the road ____ with snow, we decided to spend the holiday at home. A. block B. to block C. blocking D. blocked 29【答案】D
27.【2012 北京】 _______ with care, one tin will last for six weeks. A. Use B. Using C. Used D. To use
【答案】C 32.【2012 北京】 Birds' singing is sometimes a warning to other birds ______ away.
A. to stay B. staying 【答案】A