问题 单项选择题

尽管方兴未艾的太空旅游业听起来激动人心,但根据发表在最新一期《地球物理研究通讯》杂志上的研究结果,如果每年私人火箭的发射次数超过1000次,大气同温层中的污染物质煤烟的含量将会显著升高,由此可能改变全球大气循环及臭氧的分布。据研究人员计算,这将使地球两极表面温度升高1摄氏度,并使极地海洋冰层厚度减少5%到15%。尽管存在于接近地表大气中的煤烟微粒可以在降雨过程中被冲刷干净,但在根本不会有雨水的同温层中。这些污染物的留存时间却可能长达3年到10年,并对地球温度造成持久影响。
对这段文字理解正确的一项是()。

A.太空旅游业的蓬勃发展会改变全球大气循环及臭氧的分布

B.大气同温层中的污染物质煤烟的含量会随着私人火箭发射次数的增加而显著升高

C.每年火箭发射次数超过1000次,会使地球温度升高1摄氏度

D.同温层中的污染物会留存3年到10年,会对地球温度造成持久影响

答案

参考答案:B

解析:

由“由此可能改变全球大气循环及臭氧的分布”可知A项混淆了可能性与必然性,排除。由“这将使地球两极表面温度升高1摄氏度”可知,C项将“地球两极表面温度”偷换为“地球温度”,排除。由“这些污染物的留存时间却可能长达3年到10年”可知,D项混淆了可能性与必然性,排除。B项由“如果每年……显著升高”可得出。故正确答案为B。

阅读理解
阅读理解。

      This is my first letter to you. I would like to tell you something about me. I'm a schoolgirl. My name
is Rose Green. I'm an American girl. I have short, straight blond hair. I'm the monitor (班长) of our class.
I study hard and well.
      I have a large family. There are seven people in it. Grandpa and Grandma are very old. I have a
13-year-old brother and a 9-year-old sister. Perhaps, you can ask:"How old are you?" Let me tell you, my
dear friend. I'm 11 years old. We all live together (在一起). How happy we are!
      My mother will give me a little dog on my birthday. I like animals very much. I often play with a dog or
a cat. My sister likes fish. But you can't play with a fish, can you?
      My father often tells us about your country. China is a large and beautiful country, isn't it?
      We can get to know each other soon. Please write back and tell me something about you and China. 
                                                                                                                                      Yours, 
                                                                                                                                      Rose Green

1. Rose comes from _____.
[ ]
A. England
B. English
C. China
D. America
2. _____ is 13 years old.
[ ]

A. I B. My sister
C. My brother
D. My friend

3. My mother will give _____ a little dog on my birthday.
[ ]
A. him
B. her
C. me
D. I
4. My father often tells us about _____.
[ ]
A. England
B. China
C. America
D. Canada
5. Rose Green and Meimei _____.
[ ]
A. are friend
B. aren't friends
C. are twins
D. are Chinese
问答题 简答题