28、In 1778,  Joseph Banks was elected ______ president of the Royal Society , ______ position he held for 42 years．

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

27、Sometimes advertisements make _______ possible for companies to sell the customers ______ money cannot buy．

A．/; that                    B．it; what                  C．that; which             D．/; whose

25、–I didn’t take notes at yesterday’s meeting because I had left my pen at home.

-You        mine. I      it.

A．must have borrowed; wasn’t using             B．may have borrowed; didn’t use

C．could have borrowed; wasn’t using             D．should have borrowed; hadn’t used

24、Our vacation was totally ruined. Not only was the food terrible, the weather was awful        .

A．but also  B．either      C．neither    D．as well

22、Aborigines’ most common tool in Australia is _______ boomerang, which is used to kill _____ animals.

A. the; ∕                        B. ∕; ∕                     C. the; the             D. ∕; the

21、Why is he always forcing his daughter to practise playing the piano if she is not _____ for a pianist?

A. meant                      B. intended          C. trained            D. taken

20、I doubt whether he can ______ his efforts much longer as he looks so tired.

A. keep on                B. keep up             C. keep back          D. keep from

19、There is no light on dormitory. They must have gone to the lecture, ______?

A. didn’t they                B. haven’t they       C. mustn’t they      D. don’t they