2015-2016学年高中英语 Unit 4 Astronomy the science of the stars Part Ⅱ Learning about Language双基限时练(含答案解析）

双基限时练 Unit 4　Part Ⅱ
Ⅰ.用适当的连接词完成下列句子
1．________ made all of us happy was that our school football team won the game.
答案　What
2．It is exactly ________ you did that made him angry.
答案　what
3．________ John will reach here is unknown because of the accident. Maybe two hours later.
答案　When
4．________ we lived ten years ago had changed so much that I nearly lost my way while visiting there.
答案　Where
5．It has been proved ________ eating vegetables in childhood helps to protect you against serious illnesses in later life.
答案　that
6．________ parents say and do has a lifelong influence on their children.
答案　What
7．________ will take the place of Mr. Li as our new headmaster hasn't been decided.
答案　Who
8．It's a pity ________ Bob can't take part in the outing because his mother is ill.
答案　that
9．It doesn't matter ________ or not Mary has been to America. ________ really matters is that she can speak English fluently.
答案　whether; What
10．________ movable type printing was first invented by the Chinese is known to us all.
答案　That
Ⅱ.用适当的连接词补全下面的对话
Lucy: Why are you looking so happy
Jenny: I've just attended a lecture. 1.________ the speaker said made me excited.
Lucy: What was it about
Jenny: About health. It seems 2.________ a lot of people don't know how to keep healthy.
Lucy: Sounds great. 3.________ I'm concerned about is my health condition at the moment. But what should I do to be healthy
Jenny: 4.________ you will stay healthy depends on two factors—exercise and diet.
Lucy: You know I always do some running on the road every night.
Jenny: Whether you take exercise is one thing, but 5.________ you take exercise is quite another.You shouldn't run at night because it wilt affect your sleep. Besides, 6. ________ you do your running isn't favorable. You should run in the park instead of on the road.
Lucy: I see. I can see it is important 7.________ now I have to change my bad habits.
Jenny: Also, you must be careful with your diet. It's well known 8.________ we are what we eat. So you should eat more vegetables.
Lucy: You're right. In fact I always eat too much meat. But I will change myself.
答案　1.What　2.that　3.What　4.Whether
5．when　6.where　7.that　8.that
Ⅲ.阅读理解
A
On a clear night you might see the Moon, some planets and thousands of sparkling stars in the sky. You can see even more with a telescope (望远镜). And you might also see many larger stars and some really “red or blue” ones. The bigger the telescopes are, the more objects and details you will see in the sky.
But scientists believe there are some things, so called black holes, in the sky that we will never see, even with the biggest telescope on the clearest night. They're the mysterious dead stars.
It is hard to imagine that stars die. After all, our Sun is a star. Year after year we see it up in the sky, burning brightly，giving us heat and light，which certainly doesn't seem to be getting old or weak. But stars do burn out and die after billions of years.
As a star's gases burn, they give off light and heat. But when the gas runs out, the star stops burning and begins to die. As the star cools, the outer layers of the star pull in toward the center. The star was crushed (挤压) into a smaller and smaller ball. If the star was very small，it ends up as a cold, dark ball called a black dwarf (矮星)．
Imagine if the Earth was crushed until it was the size of a small ball. That's how tightly this dead star，a black hole, is packed. Its gravity attracts in everything—even light, which can never come back to your eyes. That's why you see nothing but blackness.
So the next time you stare up at the night sky, remember: there's more in the sky than meets the eye! In the silent darkness are black holes—the great mystery of space.
1．The passage mainly tells us something about ________.
A. the night sky B. the telescope
C. the black holes D. the gravity
答案与解析　C　文章开篇描述夜空中有点点的繁星，然后指出用望远镜会看到更多的星星，但还是有一些看不见的“黑洞”，借此引出主题。然后仔细分析黑洞的实质、形成过程，从而逐渐揭开其神秘的面纱。所以文章的主题是“黑洞”，而其他事物都是铺垫，是次要的。
2．We can learn from the passage that ________.
A. on the clearest night，we can find a black hole in the sky
B. we can find black holes with the help of the telescope
C. we can find the black holes are red or blue in color
D. nobody，including scientists，can see the black holes
答案与解析　D　文章在对黑洞的描述中第二段指出“But scientists believe there are some things, so called black holes, in the sky that we will never see, even with the biggest telescope on the clearest night.”以及第五段“... even light, which can never come back to your eyes.That's why you see nothing but blackness.”由此判断，黑洞是不能被任何人看见的，包括科学家。
3．We can see that the black holes are actually ________.
A. the burning sun B. the crushed earth
C. some dead stars D. the empty space
答案与解析　C　文章第二段对黑洞做了解释和定义： They're the mysterious dead stars和前文的so called black holes对应。
4．Why does a star die according to the passage
A. It is burnt by the sun's light.
B. It is attracted by the earth's gravity.
C. It runs out of light and heat while burning.
D. It is crushed by other bigger stars.
答案与解析　C　文章倒数第三段中提出： “As a star's gases burn, they give off light and heat. But when the gas runs out, the star stops burning and begins to die.”由此推断，星星死亡的原因是自身燃烧，散尽了光和热。
5．We can not see the black holes because ________.
A. we have no good telescope
B. there are no black holes at all
C. they are too small and weak
D. they are too tightly packed
答案与解析　D　文章讲到由于气体燃烧殆尽，星体变小紧缩，由此产生很大的引力，吸收了一切的光，所以看不见他们，由此推断答案为D项。
B
Hello! My name is Lisa, and I am a lioness. I live on the open grasslands of Africa with my family. Lions living in a group are called a pride.
My father is strong and powerful. He and his cousin are the leaders of our pride. The other members are my mother, her sisters, and their children.
The area where a pride lives is big! We roar (咆哮) to tell each other where we are and to warn strangers to stay away.
Meet my new baby brother. His name is Leon. See the spots on his fur We lions are born spotted or striped (有条纹的). As we grow older, the spots gradually disappear.
Lionesses usually spend their entire lives with their birth pride, but Leon will leave when he is about three years old. He'll run around with a male (雄性的) friend or relative for a few years until they take over a pride of their own.
But for now, we have lots of fun together. We often play and fight for hours, which can help us practice skills that we will need for hunting.
We lions keep ourselves very clean. Just like a house cat, I clean my fur (毛) with my tongue. We clean for each other, too, to show we're friends.
Lions like to sleep for most of the day. We hunt in the cool evening. Female (雌性的) lions hunt more often than male lions. We work together as a team. At the right moment, we attack and kill our prey. Then we share it. Male lions usually eat first. Females eat next. Baby lions are the last to eat. The smallest one gets the least food.
Since we are full, it's time to go to find a nice place for a sleep. Bye!
6．Lisa in this passage is the name of ________.
A. a girl B. a male lion
C. a female lion D. a pride
答案与解析　C　根据第一段的“My name is Lisa, and I am a lioness.”可知，Lisa是一只雌性狮子，所以选择C项。
7．According to the passage, Leon ________.
A. hunts more often than his sisters
B. will have spots on his fur for the whole of his life
C. will leave his birth pride when he is about three
D. will take over his birth pride when his father dies
答案与解析　C　根据第五段的“Lionesses usually spend their entire lives with their birth pride, but Leon will leave when he is about three years old.”可知，Leon在3岁时就会离开生长的狮子群，所以选择C项。
8．The underlined word “prey” in the passage probably means ________.
A. the animal that is hunted
B. the animal that is dangerous
C. the animal that is powerful
D. the animal that is ill
答案与解析　A　根据上下文，可以知道这句话的意思是：时机恰当的时候我们会攻击并杀死猎物，所以选择A项。