问题 单项选择题 案例分析题

读“我国某地区等高线地形图”,回答下列问题。

能正确反映图中沿a~b线所作的地形剖面图的是()

A.图A

B.图B

C.图C

D.图D

答案

参考答案:B

解析:

仔细读图,注意图中等高线的数值及其弯曲状况,判断a、b两点所处的高度范围及剖面线穿过地区的地势高低变化。注意下图中红笔所描的等高线,所以500米<a<1000米,1000米<b<1500米,故排除选项A、B;而且有两处山谷的海拔高度大于500m小于1000m,如下图中的红点位置,故选项B正确。

单项选择题 B型题
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.

26()

A.sick 

B.nervous 

C.angry 

D.afraid