20、I’m considering _______ a washing machine, which is considered _______ a great help to my wife.  

A. buying; to be              B. buying; being

C. to buy; being              D. to buy; to be

19、In _______ summer of 1963 Martin Luther King, Jr gave a speech to thousands of _____ black people.

  A. a; the           B the; /                  C /; the                   D /; a

18、The President is now on a visit to Russia ,____at expanding relations between the two countries.

A. aims                        B. to aiming                     C. being aimed                     D. aimed

17、When I first set ____ in Australia, I didn’t know what the future might have in____ for me.

A. my foot; the store            B. a foot; the store         C. foot; store                    D. feet; stores

16、Scientific discoveries are often _______ industrial and agricultural productions．

A．applying for         B．applied to               C．applying to              D．applied for 

15、―I’m tired , Dad.      

----Tired? __________?

A. For which                      B. For what                 C. From which             D. Of what

14、Sorry, I don’t know you _____ what I said just now．

A．throw light upon          B．have effects on        C．have advantage of         D．are sensitive to

13、Can you give us a talk on the ______of water?

A. property                   B. properties                 C. capacity                   D. capacities

12、Guilin, a dreamland, gives us a_____ _beauty.

A. fierce                             B. greedy                       C. breathtaking             D. seasoned

11、The universities have got bigger in size, ________ many more people the chance of higher education.

A. so allowing           B. thus allowing               C .so to allow               D. thus to allow