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问题 选择题

一些运动员，由于比赛时过于紧张，比赛时成绩还不如平时的训练成绩，一些平时成绩不错的同学由于考试怯场，考试成绩不理想，这说明 [     ]

A．消极的情绪影响人的正常水平的发挥。

B．人的情绪多种多样，千姿百态。

C．运动员和学习好的同学都会产生消极的情绪。

D．情绪对人的行为只有消极影响。

答案

答案：A

单项选择题 A型题

某女，25岁，2年前因暴受惊恐出现心悸失眠，多方治疗不能根治。现病人心烦失眠，常被恶梦惊醒，醒后难于入睡，伴心悸气短，自汗，舌淡，脉细。首选方剂为 （）

A.安神定志丸加减

B.安神定志丸合酸枣仁汤加减

C.归脾汤加减

D.天王补心丹合朱砂安神丸加减

E.六味地黄丸合交泰丸
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单项选择题

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
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