从5名男同学,4名女同学中选出3名同学组队参加课外活动,要求男、女同学都有,则不同的方案个数共有[ ]
A.140
B.100
C.80
D.70
答案:D
Every hour and every minute ______precious to us because only six months are left for us to prepare for the college entrance examinations.
A.will be
B.are
C.is
D.were
下列加线字词活用相同的一组是[ ]
A.①七十者衣帛食肉 ②是使民养生丧死无憾也
B.①席卷天下,包举宇内,囊括四海 ②序八州而朝同列
C.①吾从而师之 ②小学而大遗
D.①子博学而日参省乎己 ②上食埃土,下饮黄泉