A study ________ in the USA in 1977 showed that the chemical ASA in aspirin coul
题型：不详难度：来源：
A study ________ in the USA in 1977 showed that the chemical ASA in aspirin could prevent a stroke.| A．carrying out | B． carried out | C．working out | D．worked out |
|
答案
| B |
解析
这题考查过去分词做定语的用法，carry out“实施，进行”和a study 是被动的关系，所以用过去分词做定语修饰a study，句意是：1977年美国进行的研究表明阿司匹林里面的化学物质ASA可以防止休克。选B。 |
举一反三
－What’s the time?
－Oh, I forgot to have my watch ________.| A．wind | B．wound | C．winded | D．winding |
|
Many activities in the shop, _______ many different types of interest, are planned _______ its out-of-date goods.| A．adjusting to; to deposit | | B．catering to; to promote | | C．applying to; to take to | | D．appealing to; to claim |
|
sit down, Emma . You will only make yourself more tired, on your feet.| A．to keep | B．keeping | C．having kept | D．to have kept |
|
It is fairly common in Africa for a group of musicians surrounded by others who also join in the performances.| A．there are | B．there being | C．there to be | D．there be |
|
We hoped that the bird had found some friendly person, landed on his shoulder, ______．| A．expected to love and care for | B．expecting to love and care for | | C．expecting to be loved and cared for | D．to expect to be loved and cared for |
|
最新试题
热门考点