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问题 单项选择题 A1/A2型题

对急性支气管与流行性感冒的鉴别，最有意义的是（）

A.发热

B.咯痰

C.肺部啰音

D.白细胞计数

E.流行病学史

答案

参考答案：E

解析：因流行性感冒是一种急性呼吸道传染病，流行病学史对流感的诊断有决定性意义。

单项选择题

如果新产品打开了销路，本企业今年就能实现转亏为盈。只有引进新的生产线或者对现有设备实行有效的改造，新产品才能打开销路。本企业今年没能实现转亏为盈。 如果上述断定是真的，则以下哪项也一定是真的 Ⅰ．新产品没能打开销路。 Ⅱ，没引进新的生产线。 Ⅲ．对现有设备没实行有效的改造。

A．只有Ⅰ。

B．只有Ⅱ。

C．只有Ⅲ。

D．Ⅰ、Ⅱ和Ⅲ。
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单项选择题

Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight (16) before setting down. High desert winds had (17) the airport to close all but one runway. He said that we would be (18) the city for a few minutes waiting to (19) . We were also told to remain in our seats meanwhile with our seat belts fastened (20) there might be a few bumps(颠簸). Well, that few minutes turned into about four-five minutes, including a ride that would make a roller coaster(过山车) (21) by comparison. The movement was so fierce that several passengers felt (22) and had to use airsickness bags. As you might guess, that’ s not a good thing to have happen in a(n) (23) space because it only (24) to increase the discomfort of the situation.

About twenty minutes into the adventure, the entire airplane became very (25) There was now a sense of anxiety and fear that could be (26) noticed. Every passenger simply held on for dear life …except one. A (27) was having a good time！ With each bump of the (28) , he would let out a giggle (咯咯地笑)of delight. As I observed this, I (29) that he didn’t know he was supposed to be afraid and worried about his (30) . He neither thought about the past nor about the future. Those are what we gown--ups have learned from (31) . He was (32) the ride because he had not yet been taught to fear it. Having understood this, I took a deep breath and (33) back into my seat, pretending I was (34) on a roller coaster. I smiled for the rest of the flight. I even (35) to giggle once or twice, much to the chagrin(随恼) of the man sitting next to me holding the airsickness bag.

（19）（）

A．arrive

B．enter

C．stop

D．land
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