1 . It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.

A．that

B．when

C．what

D．how

2 . ____parents say and do has a life-long effect on their children.

A．That	B．Which
C．What	D．As

3 . Information has been put forward ____ more middle school graduates will be admitted into universities.

A．while

B．that

C．when

D．as

4 . --- What else do you want to know about the cell phone?
--- _______ it can be used as a digital camera. You know, I’m into photography.

A．Whether

B．What

C．That

D．How

5 . The reason _______ he felt frustrated was ______ he lost his MP4.

A．why/that

B．that/why

C．why/because

D．that / because

6 . ________ they visited the Science Museum, they showed great interest in everything they saw.

A．The first time

B．For the first time

C．At first

D．At the first time

7 . It is ________ he often fails in exams ________ makes his parents worried about him.

A．what；that.

B．that；what.

C．that；that.

D．because；that.

8 . She speaks English fluently _____ she were a native American.

A．as though

B．even if

C．as long as

D．ever since

9 . Guilin is the most beautiful place _______ people all over the world want to visit.

A．where

B．which

C．what

D．that

10 . _______, he talks a lot about his favourite singers after class.

A．A quiet student as he may be	B．Quiet student as he may be
C．Be a quiet student as he may be	D．Quiet as he may be a student