单项选择题Others argue that since the earth has endured a long string of ice ages in the last two million to three million years, any warming is()to be temporary.

A.seemed
B.likely
C.tended
D.possible


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2.单项选择题The opposition leaders()the government for not taking action sooner.

A.warned
B.criticized
C.threatened
D.urged

4.单项选择题The association is()to raising funds to help the blind.

A.conducted
B.committed
C.concentrated
D.concerned

6.单项选择题It()as a shock to realize that I was not alone in the room.

A.came
B.appeared
C.arrived
D.reached

7.单项选择题()so many people in the United States been out of work as today.

A.More than ever before
B.In the past, there have never
C.Never before have
D.Formerly, there never were

9.单项选择题The problem()when the students refused to do their homework.

A.arose
B.aroused
C.rose
D.raised

10.单项选择题Speaker A: Want to come over Thursday for supper? Speaker B:()

A.I really can't. You'll not mind, I think
B.Let's put it off till later
C.Thanks, but I have to work that evening
D.No, I don't want to