(2013·甘肃兰州名校高三检测)The professor told me to start the research right now, I was sure to fal

发布时间：2020-08-17 09:06:00

(2013·甘肃兰州名校高三检测)The professor told me to start the research right now,      I was sure to fall behind.
A. or
B. so
C. but
D. and

网友回答

(答案→)A. or
B. so
C. but
D. and
解析：A　句意：教授让我立刻开始研究工作，否则我肯定会落后的。根据句意选用or，意为否则。
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