— What can I do for you?—（）

单项选择题— What can I do for you? —（）

A.I want a kilo of pears.
B.You can do in your own way.
C.Thanks.
D.Excuseme.I’m busy.

1.单项选择题She's part of a team of scientists who are（）upon cancer research.

A.worked
B.arranged
C.engaged
D.involved

2.单项选择题Tourism has（）agriculture as the nation's main industry.

A.recalled
B.reckoned
C.redirected
D.replaced

3.单项选择题I cannot tell the（）difference between the twins.

A.slender
B.slight
C.single
D.simple

4.单项选择题This is the dictionary（）I depend a lot whenever I have problems with new words.

A.on which
B.in which
C.for hich
D.with which

5.单项选择题It's no use（）with him

A.toargue
B.（in）arguing
C.argue
D.argued

6.单项选择题He is over fifty, but he looks as if he（）only in his thirties.

A.is
B.were
C.will be
D.has been

7.单项选择题Is there any reason（）you should go away?

A.why
B.that
C.where
D.as

8.单项选择题Such changes can alter the social structure,（）people to move.

A.leading
B.which led
C.leads
D.which leading

9.单项选择题Cycling is a good exercise.（）, it doesn't pollute the air.

A.Therefore
B.However
C.Moreover
D.But

10.单项选择题They were asked to avoid（）any water which had not been boiled.

A.drinking
B.not to be drunk
C.to drink
D.having