内容正文:
[预习自测]
Ⅰ.单词拼写
1.Heavy snow has caused total chaos (混乱)on the roads.
2.He bought some tropical (热带的)fruits when he visited the South.
3.In its annual (每年的)report,UNICEF says at least 40,000 children die every day.
4.Contrary to popular belief, moderate (适度的)exercise actually decreases your appetite.
5.The government promised to implement (实施)a new system to control financial loan institutions.
6.My mother underwent (经历)major surgery last year and has been recovering.
7.The law needs to be reformed (改革)to adapt to social development.
8.We were given a basin (盆)of water to wash our hands in.
9.The company has adopted a firm policy (政策)on shoplifting,which works well.
10.The interview was broadcast (广播)on radio and television and the people all over the country have known about it.
Ⅱ.完成句子
1.The law was passed in_response_to (对……做出反应)public pressure.
2.We cannot expect her to do the housework as_well_as (也还)look after the children.
3.How to deal_with (处理,对付)it if the situation happens to you or your girlfriend?
4.Rescue workers are digging through the ruins in_search_of (搜寻……)other victims.
5.He expressed deep gratitude again on_behalf_of (代表)the government.
6. Climate_change (气候变化)has brought many disasters to the world.
7.People were_shocked_by (对……感到震惊)the news that more than 10 citizens were killed in the accident.
8. According_to (根据)to the report,China has won 9 gold medals in the Beijing Winter Olympics.
9.Climate change could have_an_impact_on (对……有/产生影响)animal evolution(进化).
10.Please refer_to (参考)this price list and give me your order.
Ⅲ.语法填空
1.A written submission (submit)has to be prepared and turned in tomorrow.
2.Relations with our neighbours aren't very harmonious (harmony)at the moment.
3.There is no restriction (restrict)on the number of people who want to participate in the club.
4.Young people are very sensitive (sense)about their appearance,which is normal.
5.The sustainable (sustain)development of agriculture and agriculture operations are closely related.
6.This is a good thing because it keeps our planet habitable (habitat).
7.Millions of people are threatened with starvation (starve)as a result of drought and poor harvests.
8.The emission (emit)of gases such as carbon dioxide should be stabilised (稳定)at their present level.
9.The floods have led to an increase in the produce(农产品).
10.It is our responsibility (responsible) to protect the environment.
[素养提升]
Ⅰ.阅读理解
When the natural climate changes due to global warming, it can surely affect seals. The majority of them live in the Antarctic region so as the ice is melting, their natural habitat can be seriously affected. These changes don't take place overnight. They can be the result of many years of additional temperatures in the area. The seals then have to find ways to adapt.
Seals depend on the cool air currents to bring plenty of food for them. When the temperatures get higher, there is less and less food and the seal population starts to shrink. Mothers aren't healthy enough to feed their babies. Many of them end up abandoned as the mothers have to leave to find their own source of food.
The fact that their desire to produce young can be changed by the warmer temperatures is frightening too. It is also believed that the warmer temperatures can allow different diseases and viruses to attack the seals. This is a huge concern as they can rapidly wipe out huge numbers of seals out there.
However, these changes in climate and temperature aren't all bad for other species of seals. Scientists have found that those living in warmer climates are producing more young due to the changes. Research also shows that the females are moving further to find food and water. When they are out of the reach of the governing males, they are more willing to accept the moves of other males in the group.
This is good news too because it means that there will be more selection in the gene pool (基因库)for future generations. It can help the seals as a species adapt to change in their natural environment more easily.
The climate change problem for seals is directly linked to humans. When we take action to change what we let out into the environment, we will make positive changes for the seals.However, it is going to take a very long time to reverse (彻底改变)the effects of what has already been done.
1.What does the author regard climate changes for seals as?
A.A doubleedged sword.
B.An unavoidable disaster for existence.
C.A mirror of evolution.
D.A requirement for more choices in the gene pool.
2.What is the second paragraph mainly about?
A.How global warming affects the seals.
B.What seals feed their babies with.
C.Why the seal population grows.
D.Where the seals find their food.
3.What will happen to the seals in warmer climates?
A.Their number will be on the increase.
B.The female seals will be in the lead.
C.Their genes will change a great deal.
D.The females will keep away from the males.
4.Which of the following can be the best title for the text?
A.The Importance of Protecting Seals
B.Seals' Adaptation to Climate Change
C.How Climate Change Affects Seals
D.Why Are Seals Becoming Less and Less
[语篇解读] 本文主要介绍了气候变暖对南极地区海豹的影响。
1.A [推理判断题。文章第一段至第三段介绍了气候变暖对南极地区海豹的负面影响,第四、五段介绍了气候变暖对其他海豹种类的正面影响。由此可知,在作者看来,气候变暖对海豹有利有弊,是把双刃剑。]
2.A [根据第二段的第二句“When the temperatures get higher,there is less and less food and the seal population starts to shrink.”可知,本段主要介绍了温度上升对海豹的影响。]
3.A [细节理解题。根据第四段中的“...those living in warmer climates are producing more young due to the changes.”可知,生活在更温暖地区的海豹会因为天气变暖而繁殖更多的幼崽。换言之,它们的数量会增加。]
4.C [主旨大意题。通读全文可知,本文主要介绍了气候变暖导致自然气候变化,进而影响南极地区海豹的生活,但也会使其更容易适应自然环境的变化,因此C项“气候变化如何影响海豹”可概括本文的主旨。]
Ⅱ.阅读填句
Icebergs are giant blocks of ice that float in the sea.
1__ Some are deep blue or green.Some look like floating sculptures.Old icebergs that have been worn down by the weather sometimes look like pillars of ice.
2__ Icebergs begin and end in the ocean. First, moisture from the ocean rises into the air and moves up into Earth's atmosphere. Over Antarctica, where air is cold, the water falls as snow. As layers of snow develop, their heavy weight presses down and turns the snow to ice in the polar climate. In fact, 90 percent of all the world's ice is on the continent of Antarctica. Huge areas of ice called ice sheets and glaciers move slowly across the continent toward the sea. __3__
When glaciers finally reach the coast, huge pieces split off into the ocean. These are icebergs. Scientists call the splitting off of icebergs “calving (裂冰作用) ”. __4__ One of the largest Antarctic icebergs is 185 miles long and 25 miles wide.
Usually, only about onefifth of an iceberg appears above the surface of the water. The other fourfifths of the “berg” is hidden underwater, out of sight. Sometimes, an iceberg has what is called a “foot”, an extension completely underwater. __5__ It was an iceberg “foot” that sank the Titanic in 1912, killing 1,503 people.
Every year, thousands of new icebergs are formed in the ocean around Antarctica. If you're lucky, you'll get to see one someday.
A.How is an iceberg formed?
B.They move very slowly in the ocean.
C.These are especially dangerous for ships.
D.Icebergs are a lot larger than a calf, though.
E.They come in many shapes, sizes, and colors.
F.The icebergs are melting because of global warming.
G.The fastestmoving Antarctic glacier moves about 1.25 miles in a year.
[语篇解读] 每年有成千上万冰山在南极周围的海洋出现。那么,这些冰山是如何形成的呢?
1.E [文章的第一句介绍了什么是冰山,空格后面介绍了冰山的颜色和形状等。由此可知,E项“它们有多种形状、大小和颜色”可引出下文。]
2.A [根据下文“冰山在海洋中形成和消失”以及上文中的内容可知,本段主要介绍的是冰山的形成过程,所以A项是对本段的总结归纳。]
3.G [根据上文中的“冰山缓慢地穿过大陆向大海移动”可知,G项“移动最快的南极冰山每年移动约1.25英里”可承接上文。]
4.D [上文提到“裂冰作用”,下文提到“最大的冰山之一有185英里长,25英里宽”。由此可知,所填的是衔接上下文的句子,D项“不过冰山要比冰裂大得多”符合语境。]
5.C [根据下文中的“1912年,正是冰山的‘脚’使得泰坦尼克号沉没……”可知,冰山水下的部分对船只来说非常危险,所以选C项。]
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