---What are you busy with ?--- We are carrying out a research ____ the cau
题型：不详难度：来源：
---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer. |
答案
| A |
解析
| 考查介词：do/carry out research into/on对…做研究，句意：--你在忙什么？--我们在做一个关于癌症原因的研究。选A。 |
举一反三
| They treated her very well _______one of the family members. |
After he won all the money they treated him ______a king.| A．like | B．as | C．as if | D．seemed |
|
– Look! What are those boys doing ______ the table?
---Well, they are playing cards.| A．on | B．around | C．under | D．beside |
|
–Excuse me, Madame. Is this plane _____take off soon?
---Oh, yes. In five minutes.| A．about to | B．starting to | C．beginning to | D．to |
|
Standing on top of the mountain, we watched the sun ____ the horizon.| A．sink below | B．sinking under | C．sinking below | D．sink under |
|
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