11. In order to make things convenient for the people， the department is planning to set up some ________shops in the residential area.

A) flowing B) drifting C) mobile D) unstable

12. Mr. Smith says： “The media are very good at sensing a mood and then ________ it.”

A) overtaking B) enlarging C) widening D) exaggerating

13. This is not an economical way to get more water; ________， it is very expensive.

A) on the other hand B) on the contrary C) in short D) or else

14. It was the first time that such a ________ had to be taken at a British nuclear power station.

A) presentation B) precaution C) preparation D) prediction

15. ________ that he wasn‘t happy with the arrangements， I tried to book a different hotel.

A) Perceiving B) Penetrating C) Puzzling D) Preserving

CDBCA