设长方体的顶点数为v，棱数为e，面数为f，则v+e+f等于 [ ] A．26 B

通过国家药品监督管理局整顿的保健晶

A．国药准字Z+8位数字
B．国药准字T+8位数字
C．国药准字F+8位数字
D．国药准字S+8位数字
E．国药准字B+8位数字
上述批准文号分别是指

（1）水平放置的天平如图所示，

在使用前必须进行的调节是：首先将游码归零，接着调节           使           平衡．

（2）若水平放置的没有调节好的天平，分度盘指针偏右时，其它操作均正确，则测量结果　　　；（选填“偏大”、“ 偏小”或“ 准确”）若水平放置的天平在调节时忘记游码“归零”，则测量结果　　　（选填“偏大”、“ 偏小”或“ 准确”）.

妊娠腹痛的发病机制是

A．虚寒

B．血虚

C．血瘀

D．气郁

E．气虚

句型转换。

1. It will be cloudy tomorrow. (就划线部分提问)

    _______ the weather _______ tomorrow?

2. Which season is your favorite? (改为同义句)

    Which season _______ you like _______?

3. He likes winter. (改为一般疑问句)

    _______ he _______ winter?

4. He speaks Japanese, ________ ________? ( 反意疑问句)

5. It's a good season for climbing mountains in fall. (改为同义句)

    It's a good season ________ ________ mountains in fall.

The great advance (91) rocket theory 40 years ago showed that liquid-fuel rockets were far (92) in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. (93) , during the last decade, large solid-fuel rockets with (94) fuels about as powerful as liquid fuels have (95) their appearance, and it is a favorite layperson’s question to (96) which one is "better". The question is meaningless. (97) might as well ask whether a gasoline or a diesel engine is "better". It all (98) on the purpose. A liquid-fuel rocket is complicated, (99) has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be reignited when (100) . (101) , the thrust can be made to vary by adjusting the speed of the fuel pumps. A solid-fuel rocket, on the other hand, is rather (102) in construction, (103) hard to build when a really (104) size is desired. But once you have a solid-fuel rocket, it is ready for action (105) very short notice. A liquid-fuel rocket has to be fueled first and cannot be (106) readiness for very long after it has been fueled. (107) , once a solid-fuel rocket has been ignited, it will keep burning. It cannot be stopped and reignited (108) desired (it could conceivably be stopped and reignited after a pre-calculated time of burning has elapsed, and its thrust cannot be varied. Because a solid-fuel rocket can be kept ready for a long time, most military missiles (109) solid fuels, but human-piloted spaceflight needs the fine adjustments that can (110) be provided by liquid fuels.

A．and

B．so

C．thus

D．but