维生素C（C6H12O6）主要存在于蔬菜、水果中．它能增强人体对疾病的抵抗能力．

3时时，时针和分针组成的角是（    ）角。

动词填空 用括号内所给动词的适当形式填空。(本大题共10分，每小题1分)

小题1:The air ______ (be not) fresh in Beijing because of the haze(雾霾).

小题2:Susan’s computer doesn’t work. Her uncle plans ______ (check) it for her.

小题3:How about ______ (row) a boat in the park? It’s interesting.

小题4:Listen! The song ______ (sound) beautiful. A girl is singing in the next room now.

小题5:— Who ______ (drive) us to the zoo this weekend?  — Mr Wu is.

小题6:John works hard. He is the first ______ (get) to school every day.

小题7:Peter is rich and he ______ (own) an eight-room house in Shanghai.

小题8:Never ______ (laugh) at the poor children. We should try our best to take care of them.

小题9:You can’t see the two boys in their bedroom. They ______ (fix) the bike with their father in the garden.

小题10:Can the little boy in a blue shirt over there ______ (stay) at home by himself(独自)?

公安机关是政府的一个职能部门，与一般行政机关没什么两样；人民警察是国家公务人员，与政府其他部门的公务员完全相同．因此，对人民警察的素质和职业道德不必有特殊要求．( )

利用生物法处理工业污水时,必需根据污水的实际情况,投加适量的什么元素,以保证微生 物的活性?

对处于衰退行业的企业进行的贷款中，短期贷款更为安全。