Through the open window we saw on the floor the happy father lying （） his stomach, his daughter riding excitedly on his back.

单项选择题Usually the teachers will be busy （） the test papers after an examination.

A.grading
B.naming
C.ranking
D.grouping

单项选择题The problem, according to the experts, is （） we should do with the salty land.

A.what
B.whether
C.how
D.that

单项选择题As we all know, the government is now making every （） to set up a harmonious society.

A.effort
B.effect
C.measure
D.performance

单项选择题同样多的货币在某地区今年比去年少购买10.71%的商品，则该地区此商品的零售价格相比去年上升（）。

A.0.71%
B.12%
C.6.63%
D.13.64%

单项选择题下列可以用机会成本概念来解释的是：（）。

A.你坐在这个考场的同时意味着你将失去另一场考试的机会
B.参加了强化培训并购买了很多“密押题”上了考场才发现原来是一场梦
C.笔试成绩不高但还有机会在面试中成功“逆袭”
D.都不正确