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1、江西省横峰中学2016-2017学年高二英语上学期第十八周周练试题（无答案）一阅读理解AEven if trees cannot walk, they are still on the move.In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests st
2、op and the treeless tundra(冻原) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this , plants tend to grow horizontal (水平的) branches low to the ground. The energy it takes for trees to grow this way means they dont have enough en
3、ergy to make seeds.But as Earths climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have started producing more seeds. This happens especially in places where white
4、spruce (白云杉) grows.White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When windblown seeds end up on the tundra beyond the tree line, they eventually can sprout(发芽) new trees. This explains how a forest can move. Of cours
5、e, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.New trees will provide shelters for some snow. Keeping the suns rays from making the white surface disappear. Instead, the trees absorb the suns heat. This warms the surrounding air.
6、 The extra warmth encourages even more trees to produce seeds. That further boosts a forests ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatu
7、res has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.32What is the main cause of the trees in the Arctic moving northward?AThe shrinking of northern tundra. BThe rising temperature.CThe fierce and cold wind
8、. DThe abundant resources in the north.33What does the underlined word “this” in Paragraph 2 mean?ATo produce more seeds. BTo move northward.CTo respond to the climate change. DTo protect themselves from the cold wind.34What can be inferred from the last paragraph?ANew trees can trap the snow, which
9、 may make the soil colder.BThe trapped snow prevents new trees from producing more seeds.CNew trees can make the surrounding air warmer.DNew trees can bring more food and shelter to local animals.35The passage is most probably taken from _.Aa science report Ba health report Ca fashion magazine Da ch
10、ildrens magazineBYou may have grown up living with sisters and brothers, or this may be your first time sharing your living space with someone else. _36_ However, it can also be a great part of your college experience. Follow these tips to make sure you and your roommate keep things pleasant and sup
11、portive throughout the year.Be clear from the beginning.Maybe you hate it when someone interrupts you when you are sleeping every morning. Maybe you need ten minutes before talking to anyone after you wake up. _37_ Its not fair to expect him or her to pick up on them right away, and communicating wh
12、at you need is one of the best ways to get rid of problems before they become problems._38_This may seem simple, but its probably one of the biggest reasons why roommates experience conflicts. Dont you think hell mind if you borrow his shoes for a quick soccer game? For all you know, you just step o
13、ver an uncrossable line. Dont borrow, use, or take anything without getting permission first.Be open to change.You should expect to learn, grow and change during your time at school. _39_ As the term progresses, realize things will change for both of you. Be comfortable to address things that unexpe
14、ctedly come up, set new rules, and be flexible to your changing environment.Follow the golden rule._40_ No matter what your relationship is at the end of the year, you can take comfort in knowing you act like an adult and treat your roommate with respect.ARespect your roommates things.BLet your room
15、mate know about your preferences.CTreat your roommate like youd like to be treated.DLiving with a roommate is really a wonderful thing.EHaving a roommate surely has its challenges.FYou should correct your bad habits first.GAnd the same should happen to your roommate, if all goes well.二完型填空I always walk to my husbands office after work, wait for him and then we drive home together every day. One day, while I was waiting for him, a beautiful Cadillac（凯迪拉克轿车） 41 near me. I was busy 42 the car when I noticed the driver. 43 , she was probably the mo
