Question

【题目】The ________ on Mars is about three-eighths of that on the Earth.

A. gravity B. food C. quality D. weight

Answer 1

【答案】A

【解析】句意：火星上的重力大约是地球上的八分之三。考查名词辨析题。A. gravity重力，指地心引力B. food食物；C. quality质量，强调品质；D. weight重量。根据句意语境，可知BCD三项意思都与句意不合，故选A。