单项选择题

Conversation 2
What is the student familiar with in using computers（）

A.The excel processing.
B.The word processing.
C.The Window processing.
D.The Dos processing.

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单项选择题

A.In the house.
B.In the factory.
C.In the park.
D.In his back yard.

填空题

Without a protection program, experts fear that lowland forests are likely (vanish) （） within five years.

Conversation 2 What is the student familiar with in using computers（） 您的浏览器不支持 audio 元素。