钢丝钳的齿口一般是用来（）的，刀口是用来（）或（）的。

— I was told you spoke ill of me in my absence.

— I said it. ______? [ ]

A. How come

B. So what

C. What for

D. Why not

根据要求完成问题。

　　2011年5月1日起，“酒后驾驶机动车”作为“危险驾驶罪”已被列入刑法，为了让大家知道“酒后驾车”的危害，九年级（3）班的同学准备组织一次以“杜绝酒驾”为主题的活动，请你参加。

1．请为这次活动设计一条对联式的宣传标语。（要求上下句字数相等、内容对称）

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2．请你写出“酒驾”的危害，至少两点。

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3．为了让更多的人了解“酒驾”的危害，请你设计两种宣传的方式。

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O₃

A．可致肺水肿
B．影响血红蛋白与氧的结合，使血红蛋白失去携氧能力
C．可引起肺癌
D．导致慢性阻塞性肺部疾患
E．对眼结膜和呼吸道黏膜具有刺激作用

（）型半导体中，自由电子为少数载流子。

On Saturday Melvin suggested that Jerome take the following week off from work and accompany him on a trip to the mountains. Jerome refused, claiming that he could not afford the cost of the trip added to the wages he would forfeit by taking off without notice. It is clear, however, that cost cannot be the real reason, for Jerome’s unwillingness to go with Melvin to the mountains, since he makes the same excuse every time. Melvin asks him to take an unscheduled vacation regardless of where Melvin propose to go.
The reasoning is most vulnerable to which one of the following criticisms

A．It attempts to forestall "an attack on Melvin’s behavior by focusing attention on the behavior of Jerome.

B．It fails to establish that Melvin could no more afford to take an unscheduled vacation trip to the mountains than could Jerome.

C．It overlooks the possibility that Jerome, unlike Melvin, prefers vacations that have been planned far in advance.

D．It assumes that if Jerome’s professed reason is not his only reason, then it cannot be a real reason for Jerome at all.

E．(E) It does not examine the possibility that Jerome’s behavior is adequately explained by the reason he gives for it.