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、The train pulled _________ and all the passengers got off.

A．in       B．out             C．down          D．on

24、We thought they had come to repair the phone, but ___________, they were thieves.

A．in addition    B．in vain         C．in future       D．in reality

22、—What fruit is in season now?

—Pears and apples, _______

A.I know              B.I think            C.I see           D.I feel

21、The performance               nearly three hours, but few people left the theatre early.

A. covered             B. reached           C. played          D. lasted

20、Let’s learn to use the problem we are facing               a stepping-stone to future success.

A. to                  B. for               C. as              D. by

19、The lawyer seldom wears anything other than a suit           the season.

A. whatever             B. wherever          C. whenever        D. however