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【判断题】
南方高产商品粮基地包括淮平原、三平原、洞庭湖平原、鄱阳湖平原、成都平原等五片自然区域。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】A．Mr. Smith. B．Mr. Johnson. C．The woman. D．Mr. Black.
【简答题】根据定积分的几何意义，判定下列定积分的值是正还是负(不必计算)．
【简答题】The harassing budget problems of the past few months have on her health and there are shadows beneath her eyes.
【单选题】The harassing budget problems of the past few months————-on her health and there are shadows beneath her eyes.
A.
have engaged
B.
have taken a gamble
C.
have taken their toll
D.
turned the tide
【简答题】根据定积分的几何意义，计算
【单选题】Why did the boss send Mr. Black to China on business?
A.
Mr. Black had never been to China before.
B.
Mr. Black was an able and hardworking man.
C.
Mr. Black could buy something interesting for Tony.
【单选题】What does the man mean?
A.
Mr. Black isn't in the office.
B.
Mr. Black is busy in the office.
C.
Mr. Black is asking the way.
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