Scientists _______ a lot of experiments on animals, hoping to find and effective way to cure the patients who had AIDS.
A.carried on
B.carried out
C.carried away
D.carried off
网友回答
B解析本题考查动词短语辨析。carry on表示“进行、继续”；carry out表示“执行、贯彻”； carry off表示“夺得”某种奖赏。