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二. 词汇与语法知识（共15题，每题1.5分.共22.5分。）

从每小题的四个选择项中，选出最佳的一项。

The teacher told his students that the earth___________round like a ball.

• A、is

• B、was

• C、be

• D、had been

55.________.

Why are people gathering in the university stadium?

• A、They are watching a football match.

• B、They are taking part in a sports meet.

• C、They are having a group photo taken.

• D、They are attending a college graduation.