发布时间 : 星期六 文章2018届高三英语北师大版一轮复习文档课后分层集训选修7Unit20NewFrontiers(B卷)Word版含答案更新完毕开始阅读d50defaab80d6c85ec3a87c24028915f804d84e9
课后分层集训
选修7 Unit 20 New Frontiers (B卷)
Ⅰ.阅读理解
(2017·河北省高三三市联考)We talk about people being “colour-blind” but very few of us are.Even those who describe themselves as colour-blind are normally just colour lack.A strongly colour-blind person will still be able to tell 20 different colours，compared to the 100 or so that normal-sighted people see.
Pingelap，a tiny island in the Pacific，is a beautiful spot but one that has a genetic trouble.It is known as Colour-blind Island because so many people who live on this remote island can only see in black and white.
Not being able to see in colour is bad enough.But one islander，Herrol，who's a fisherman，also struggles in full sunlight because all he sees is a painful burnt-out image.“I find it difficult to go outside in the sun because when it's sunny I cannot see to do my work.”
But if being truly colour-blind is rare，why is it that around 10% of the population of Pingelap live in a totally black and white world?
Well，we know that in 1780 the population of Pingelap was all but wiped out by a tsunami (海啸)．As few as 20 people survived，one of whom was the king.It's believed he had a genetic fault that causes colour-blindness and he passed this fault on to his many generations.
There is one advantage.Herrol can see well，really well，in the dark.So when it gets dark，Herrol and his friends get in their boats and hunt flying fish.They hang up flaming torches and the fish are attracted to the flames.“This type of fishing is fun，” Herrol says，“especially if we catch plenty.So even though it's hard work we enjoy it.”
【语篇解读】 本文是一篇说明文。Pingelap岛因很多居民是色盲而闻名。由于统治该岛的国王是色盲，他将这一基因遗传给了后代。
1．What is Pingelap famous as? A．A tiny island. B．A beautiful island.
C．A mentally troubled island. D．A colour-blind island.
D [细节理解题。根据第二段第二句“It is known as Colour-blind Island because so many people who live on this remote island can only see in black and white.”可知，Pingelap因为岛上很多居民是色盲而出名，故D项正确。]
2．What can we infer about Herrol? A．He may stay at home when it's sunny. B．He is interested in burnt-out images. C．He likes taking photos very much. D．He doesn't live in Pingelap any more.
A [推理判断题。根据第三段最后一句Herrol所说的话“I find it difficult to go outside in the sun because when it's sunny I cannot see to do my work.”可知，Herrol发现在阳光下他无法看清东西，所以无法工作；据此可以判断，阳光充足时他可能会待在家里，故A项正确。]
3．Why are about one-tenth of people in Pingelap seriously colour-blind? A．Because Pingelap often suffers from tsunamis. B．Because the king had an unlucky marriage. C．Because the king's genetic fault played a role. D．Because the king made a serious mistake.
C [细节理解题。根据倒数第二段的最后一句“It's believed he had a genetic fault that causes colour-blindness and he passed this fault on to his many generations.”可知，该岛的国王是色盲，他将这一基因遗传给了后代，故岛上很多人是色盲，故C项正确。]
4．What would be the best title for the text? A．The island of colour-blindness B．The disadvantage of Herrol C．The history of Pingelap
D．The advantage of colour-blindness
A [标题判断题。通读全文尤其是第二段的第二句“It is known as Colour-blind Island because so many people who live on this remote island can only see
in black and white.”可知，本文主要介绍了色盲岛——Pingelap，故A项最适合做本文标题。]
Ⅱ.阅读七选五
(2017·衡水中学高三一调)It is impossible to know when you might find yourself lost in a forest.If you know what to do，you can survive in a forest without much trouble；but if you are not prepared，survival can be much less likely.
Keep fear at bay
It is completely natural to be afraid when you are faced with a survival situation.1.________ The more your fear overcomes you，the lower your chances are of survival，as your mind is going to become clouded and panic may set in.
Stay warm
Obviously，the low body temperature is one of the primary dangers you face when you must survive in the forest.2.________ Never stop to sleep or quit moving around unless you have appropriate shelter.
Know how to make a fire
Obviously，if you have a lighter or matches，this is not a problem.But if not，you can attempt to use a dry narrow pointed stick and a dry flat piece of wood.3.________ This requires a great deal of work，but if done correctly，you will succeed.
Make some shelter
4．________ The easiest way to provide protection is to find a fallen tree and cover it with other branches and brush so that you can stay in the natural pit underneath the tree trunk.This is a very important aspect of being able to survive in the forest.
Stay put unless you know exactly where you are
If you can build a stable shelter and start a fire，you can survive in the forest for several days.5.________ If you know where you are，travel as far as possible during the day while making sure you stop long enough before dark so that you can build another shelter.
A．Soon you will find that it's not that difficult to survive in the forest.
B．However，if you are going to survive in the forest，you must keep your thoughts clear.
C．Make as much friction(摩擦) as possible by rubbing the pointed stick along the
flat piece.
D．It is better to stay and wait for rescue.
E．Under no circumstances should we fight with the wild animals.
F．Caves and overhangs are perfect，but most likely you must build your own. G．It is crucial that you do all you can to stay dry and keep your body temperature up.
【语篇解读】 本文是一篇应用文，主要针对在森林里迷路后该怎样逃生提出了五条建议。
1．B [该条建议是远离恐惧。上文提到，当你面对求生的境况时，感到害怕是很自然的事情。下文提到，你越害怕，生还的机率就越低。由此可知，上下文表示转折，因此空白处应为承上启下的过渡句，且表转折。故B项“然而，如果你打算在森林中生存下来，你就必须保持头脑清醒。”符合语境。故选B。]
2．G [该条建议是保暖。显而易见，体温低是你在森林中所要面对的最大的危险之一。因此，对你来说，应该尽最大努力保持体温，这是至关重要的。不要停下来睡着或者待着不动，除非你找到了一个适合休息的地方。根据上下文逻辑关系可知，G项中的“keep your body temperature up”与该条建议相符，且与上下文话题衔接紧密，符合语境。故选G。]
3．C [该条建议是知道如何取火。上文提到，如果你没有打火机或者火柴，你可以尝试着用一个很尖的干燥的木棍和一个平的木头。下文提到，这需要很大力气，但是，如果方法正确，你就会成功得到火源。由此可知，空白处应为钻木取火的具体方法。故C项“使木棍在平的木头上尽快摩擦”承上启下，符合语境。故选C。]
4．F [该条建议是建造遮风避雨的地方。下文介绍了简单方法；由此可知，空格处应是该条建议的主题句。F项意为“山洞和悬挂物都是很好的地方，但是，大部分情况下你都需要自己建一个临时住所”，照应该段主题，符合语境。故选F。]
5．D [该条建议是待在原地，除非你明确知道自己所在的地方。上文提到，如果你能够建一个固定的住所，还能够生火，你就可以在森林中生存几天。故D项“最好待在那里等待救援”承接上文话题，符合语境。故选D。]
【导学号：34802248】
Ⅲ.语法填空