单项选择题

Questions 16 to 18 are based on the passage you have just heard.

A. To fly through the water looking for explorers.
B. To show TV programs and films to experimental workers at sea.
C. To demonstrate technology for the development of another vehicle of its kind.
D. To transport explorers to the very bottom of the sea.
<上一题 目录 下一题>
热门 试题

单项选择题
A. Birds use their beaks to clean their feathers. B. Preening is very important to birds. C. The habits of birds are interesting. D. How birds clean their feathers.
A. Birds use their beaks to clean their feathers.
B. Preening is very important to birds.
C. The habits of birds are interesting.
D. How birds clean their feathers.
单项选择题
D
相关试题