Question

Mary is short__________ her brother is very tall.

A. still
B. nor
C. while
D. when

Answer 1

答案C
while用作连词，表示“对比”、 “衬托”，可译为“而”。如：He is rich while his sister is poor．他很富有，而他的姐妹却很穷。A项still不是连词；B、D项不合句意。