连词是用来连接词、词组或( )的词。
A.句子
B.词汇
C.成语
D.俗语
参考答案:B
She is a diligent student, and all her spare time she has _____ staying in the library.
A.is spent
B.spent
C.to spend
D.to be spent
身高标准体重筛查肥胖的标准是()。
A.实测体重超过身高标准体重的10%
B.实测体重超过身高标准体重的20%
C.实测体重超过身高标准体重的30%
D.实测体重超过身高标准体重的40%
E.实测体重超过身高标准体重的50%