单选题：Even if in those developed countries, manual work is still

题目内容：

Even if in those developed countries, manual work is still necessary sometimes. A．expressive
B．physical
C．exaggerated
D．dubious

参考答案：

答案解析：

Smoking may induce lung cancer.

Smoking may induce lung cancer.A．Right B．Wrong C．Not mentioned

分类：理工类题型：单选题

回答题：Clone FarmFactory farming could soon enter a new era of mass production. Co

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下列工程费用中，属于建设工程费用的有（　）A．管道防腐费用 B．循环水塔费用 C．清净水池费用 D．管道保温费用 E．锅炉烟囱费用

分类：理工类题型：单选题