Some of you may have finished unit one. _____ , you can go on to unit two.
 A. If you may      B. If you do      C. If not       D. If so

My daughter cares more for new clothes than anything else in the world, so she is very _______ about what she wears.

A. special　　　　 B. strict　　　　 C. especial　　 D. particular

Bob asked the policeman ____he worked to contact him whenever there was an accident.

A. with him　　 B. who　　　　　　 C. with whom　　　　 D. whom

Scientists used to explore on the surface of the ocean. Now they are exploring below the surface, too. They want to know about ocean water and the plant and animal life deep in the ocean.

In 1934 the scientise William Beebe dived 3,000 feet below the surface in a hollow steel ball. In 1935 August Piccard dived 10,330 feet. In 1960 his son Jean dived to a depth of 35,800 feet.

All these early dives were deep. But the divers could not stay down for very long. They had to come back up to the surface after a few seconds. Scientists needed to stay down longer to study life below surface. Later they succeed. Cousteau, a Frenchman, was able to keep men down to a depth of 36 feet for one month and to a depth of 90 feet for a week.

Now scientists are developing even better equipment. With this new equipment, men can stay below the surface for days or even weeks. In 1962 Cousteau set up a research station 35 feet below the surface. Then, in 1964, he set up another station on the ocean floor of the Red Sea. This was the first undersea station to operate without help from the surface.

Many countries are now studying undersea living. The former Soviet Union has an undersea laboratory in the Crimean Sea. The United States has a laboratory 50 feet down on the ocean floor off the Virgin Islands. In 1970 five men lived there for two weeks. Then a team of five women scientists stayed in the laboratory. Next came other teams of men. Scientists hope to find enough mineral, vegetable, and animal wealth there to provide food for the entire world.

1.In order to ____, scientists are exploring below the surface of the ocean.

A.    know about the ocean water deep in the ocean

B.    stay down longer to study life of the plant and animal below the surface

C.    know about the plant and animal life deep in the ocean

D.    both A and C

2. Who made the deepest dive?

　 A. William Beebe　　 B. August Piccard　 C. Jean Piccard　　 D. Cousteau

3. Who set up the first undersea station?

　 A. A Frenchman　　　 B. An American　　　 C. A Russian　　　　 D. Not mentioned

4. Which of the following statement is true?

A.    The early dives could not stay down for very long.

B.    Up to now only five scientists have stayed in the undersea laboratory.

C.    The purpose of setting up undersea lab is to make plans for the use of the resources in the ocean.

D.    None of the above is true.

5. The author wants to tell us _____.

A.    that scientists try to explore the ocean depth

B.    that scientists try to make use of resources in the ocean

C.    about the secret of the plant and animal life in the ocean

D.    both A and B