单选题：These animals migrate south annually in search of food．

题目内容：

These animals migrate south annually in search of food． A．explore
B．travel
C．inlaid
D．prefer

参考答案：

答案解析：

It seemed incredible that he had been there a week already．

It seemed incredible that he had been there a week already． A．right B．unbelievab

分类：卫生类题型：单选题

回答题：Exercise Lowers Employers' Health CostsCompanies can save millions in health

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Please check your bill before you leave the shop and make sure that itis correct

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中国社会主义经济发展的立足点和根本基点是（　　）A．独立自主、和平共处 B．独立自主、自力更生 C．和平共处、自力更生 D．对外开放、独立自主

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发展中国家所生产的初级产品具有的特点是（　　）A．需求弹性低 B．生产成本低 C．库藏时间短 D．容易找到代用品 E．易于储存

分类：卫生类题型：单选题