正方体的全面积为S，它的顶点都在球面上，则这个球的表面积是______．

Read and judge．（阅读短文，判断正误，正确的写“√”，错误的写“×”。）      

    Hello, boys and girls.I am a robot. Myname is Mingming.I have two big eyes         and a big mouth.I

can speak Chinese and English.I can play football and basketball very well.I can sing and dance, too. But

I can't swim.Am I cool? Do you like me?

(  )1. Mingming is a robot.

(  )2. Mingming has got small eyes and a big mouth.

(  )3. Mingming can't speak English.

(  )4. Mingming can swim.

______children whose parents had died in Wenchuan earthquake _____sent to live with families in other cities.

A．A great number of; was

B．A great number of ; were

C．The great number of; was

D．The great number of; were

在下列行政效率测定的原则中，体现方向性的原则是( )。

A．行政管理为社会主义政治服务的原则

B．量与质统一的原则

C．短期效果与长期效果统一的原则

D．局部效益与全局效益统一的原则

润滑系统中的粗滤器可（）联于机油泵与主油道之间，属于全流滤清器。

剩余价值率为100%，表示（）。

A.工人一天劳动创造的价值有一半为资本家无偿占有

B.工人一天的全部劳动时间都为资本家生产剩余价值

C.工人一天劳动时间里，为自己劳动与无偿为资本家劳动的时间相等

D.工人一天生产的商品的价值中，工人得到的与资本家占有的相等