问题 选择题

每年9月7日前后为“白露”节气,届时我国多数地区昼夜温差往往为全年最大。夜间空气中的水汽遇冷凝结成细小的水滴,附着在花草树木的绿叶或花瓣上,早晨的阳光照射,看上去洁白晶莹,因而得“白露”美名。

小题1:结合“中国白露至秋分期间平均日较差分布图”,下列描述正确的是

A.B地一定为8℃以上

B.A地与B地最大差值可达8℃

C.温差从东南向西北递减

D.在此期间上海出现“白露”机会一般比同纬度地区少小题2:以下关于日较差的说法正确的是

A.阴天比晴天日较差大

B.沿海比内陆日较差大

C.纬度高的地区比纬度低的地区日较差大

D.日较差大利于瓜果糖分积累小题3:图中A地比B地温差大的主要原因是

A.地势高

B.地处内陆

C.纬度高

D.寒潮侵袭

答案

小题1: D

小题1: D

小题1: B

小题1:根据“大于大的,小于小的”可知B地一定为8℃以下,A地与B地最大差值可达12℃,温差从东南向西北递增。故选D。 

小题2:日较差大表明白天温度高,利于植物光合作用;晚上温度低,利于植物有机物的积累,从而利于瓜果糖分积累。故选D。

小题3:图中A地为非季风区,地处内陆,温差大;B地为季风区,温差小。故选B。

完形填空

阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

I was coaching girls’ track in Iowa and there was a young discus(铁饼)thrower on the team with  36  potential(潜力). Here goes her story.

At the end of our training   37  the district track meet, this discus thrower, Lucy, asked me if she   38  come to the school on Sunday for a little   39  training. I agreed. The year before, she had placed second at the district meet and   40  missed going to the state meet. She had won every discus event,   41  that district meet! And, her throws in the competitions had   42  been between 106’1” and 110’10”.

Something began to   43  me. Why couldn't Lucy   44  to get the discus to 111 feet? I wondered if it was more a psychological barrier(心理的障碍)  45  a physical one. I decided to try something   46 . I made up my mind to   47  to Lucy.

On Sunday, after her drills, I said, “Why don’t you throw five or six good ones for me to  48 ?” She began to throw again, but   49  were farther than what she had already thrown. But, I didn’t tell Lucy. As I was measuring the   50  one, I pulled out some more tape (量尺) and yelled out to her, “ Come to see this! This one is  51 ! ” It wasn’t. Lucy, thinking that this was a personal best, jumped wildly into the air in  52  .

The next afternoon, at the district meet, Lucy   53  with a personal best throw of 114’10”! Just 24 hours after I had lied to her. However, this time she had   54  thrown the discus four feet further than she had ever thrown it before.

Sometimes we   55  our own barriers in our mind. So learn to take control of your mind.

21.A. little          B. great           C. no              D. limited

22.A. after           B. during          C. since           D. before

23.A. could           B. must           C. should         D. would

24.A. helpful        B. extra          C. real           D. regular

25.A. luckily         B. completely     C. narrowly        D. probably

26.A. except         B. including      C. despite        D. with

27.A sometimes       B. always         C. never          D. seldom

28.A. frighten       B. please         C. shock          D. bother

29.A. seem           B. pretend        C. need           D. ask

30.A. apart from     B. rather than    C. because of      D. according to

31.A. impossible     B. familiar       C. new             D. easy

32.A. lie            B. turn           C. reply          D. call

33.A. look           B. measure        C. match          D. take

34.A. many           B. all            C. some           D. none 

35.A. worst          B. closest        C. first          D. final

36.A. higher         B. farther        C. bigger         D. longer

37.A. excitement     B. anxiety        C. puzzlement     D. anger

38.A. disappeared    B. lost           C. won            D. arrived

39.A. actually        B. hardly         C. nearly          D. only

40.A. break          B. remove         C. take           D. set

多项选择题