问题
选择题
---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
A.into
B.onto
C.to
D.in
答案
答案:A
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。
---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
A.into
B.onto
C.to
D.in
答案:A
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。