1、.阅读理解As a kid, I wanted to be a naturalist. When I got to college, I chose what I thought was a more practical path, studying physics along with public policy. That combination led me to atmospheric sciences. Now Im studying low clouds.But I didnt really notice low clouds until I started my study at
2、 the University of Washington, in Seattle. That city had a lot of low clouds. I suddenly realized how important their reflection of heat back into space was for Earths climate. I continued studying low clouds at the University of Colorado in Boulder. There I earned my PhD.Seattles skies may be home
3、to plenty of low clouds, but there are even better places to spot these little clouds. The greatest gatherings tend to occur off the coasts of places like Namibia, in Africa, and northern Chile. These places are home to some of Earths driest deserts. And I like visiting such places.The more I learne
4、d about these little clouds, the more fascinating I found them. Im really interested in the various ways these low clouds respond to their environment. Because there are so many low clouds and they help keep Earth cool by reflecting heat, anything that affects them can also affect overall climate. I
5、t feeds back to the whole energy balance of the planet.Lately Ive been exploring how smoke that drifts (漂浮) over clouds might change the way that these clouds absorb or reflect sunlight. Such smoke from burning trees and grassescan drift thousands of kilometers. If that smoke affects clouds, it migh
6、t also affect climate. Last year, I spent a month on distant Ascension Island in the South Atlantic Ocean setting up instruments to track the interaction (相互作用) between low clouds there and smoke from southern Africa.I appreciate the diversity in my work. Besides the occasional trip to distant islan
7、ds, I also teach and work with other scientists to better understand Earths climate system. Along the way, Im helping bring one type of low clouds to the attention it deserves.作者是一位研究低云的科学家，她正在研究低云对气候的影响。1What do we know about the author?AShe learnt three majors at the same time in college.BShe want
8、ed to study low clouds when she was a kid.CShe knew the importance of low clouds when in university.DShe was always worried about climate change in the world.答案：C解析：细节理解题。根据第二段的“But I didnt really notice low clouds until .I suddenly realized how important their reflection of heat back into space was
9、 for Earths climate.”可知，作者在大学时知道了低云对气候变化的重要性。2Why does the author like visiting places like Namibia and northern Chile?ABecause she enjoys views of deserts.BBecause she loves visiting beautiful coasts.CBecause she has got tired of Seattles skies.DBecause theyre great places for observing low clouds.
10、答案：D解析：推理判断题。根据第三段的“The greatest gatherings tend to occur off the coasts of places like Namibia, in Africa, and northern Chile.”可推断，作者喜欢去这些地方是因为这些地方很适合观察低云。3What was the authors purpose in spending a month on Ascension Island?ATo study smokes effect on low clouds.BTo find the real causes of climate
11、change.CTo set up instruments for other scientists.DTo study the influence of low clouds on climate.答案：A解析：细节理解题。根据第五段的“Last year, I spent a month on .between low clouds there and smoke from southern Africa.”可知，作者在Ascension Island待了一个月是为了研究烟对低云的影响。4What does the underlined word “diversity” in the la
12、st paragraph mean?AThe fact of being very special.BThe fact of working by oneself.CThe fact of being respected by others.DThe fact of including some different things.答案：D解析：词义猜测题。根据最后一段的“Besides the occasional trip to distant islands, I also teach and work with other scientists to better understand
13、Earths climate system.”可知，作者的工作包括多方面的内容，因此可推测，画线词意为“多样性”。.七选五Ways to Save Money When Youre ShoppingSmart shopping is important for a low budget(预算). The following tips will help you save money when you are shopping.Make a shopping list. Before you go shopping, make a list of things you plan to buy.
14、1 Itll help avoid your impulse shopping(冲动购物)Only bring the cash you need. 2 Before you go out, put a small amount of cash in your purse to cover all the buying you plan on doing. If the cash runs out, your shopping time is over for the day. When it comes to clothes, just buy the basics. 3 Chances a
15、re that you are better off with a smaller number of basic pieces.When in doubt, leave the store. Have no idea about whether or not to buy something？ 4 If you decide later that you really，really want it, then you can go back and buy it tomorrow. But chances are that you will be happy when you save yo
16、ur money. 5 Some of them love it when you spend money because it makes them feel better about their own purchases. Instead of going shopping with those friends, call up some friends who will give you their honest opinions and wont persuade you into buying anything.ATry not to shop when bored.BPut it
17、 down and leave the store.CPick your shopping friends wisely.DYou cant spend money you dont have.EUsed things are cheaper than new ones.FBefore you buy something, ask yourself how often youll actually wear it.GThe rule is that you are not allowed to buy anything unless its already on your list.很多人在购
18、物过程中会无法抑制自己的冲动，花很多钱买自己不需要的东西。本文介绍了一些可以帮助人们理性购物的方法。1G解析：本段主要介绍了列购物单的方法。G项指出规则是你不能买购物单上没有的东西，符合本段的语境。2D解析：根据上下文可知，该段讲的方法是购物时只带足够买自己计划买的东西的钱。D项指出你不能花你没有的钱，符合此处的语境。3F解析：该段讲的是买衣服时的省钱方法。F项指出买衣服前先问问自己你实际上能穿它多少次，符合本段的语境。4B解析：上一句是一个问题：你是不是拿不定主意要不要买某物？B项(放下它，离开商店)回答了上一句提出的问题，并且符合该段的主旨。5C解析：该段提到购物时要和那些不会劝说自己买东西的朋友一起，因此C项能概括该段的主旨。
