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1、Unit 5 Canada-The True North grammar课时作业.用所给词的适当形式填空1He was accused(accuse) of telling lies.2He swore(swear) hed study harder next time.3Her laziness and lack of commitment(commit) led to her failure.4Her devotion(devote) to the job left her with very little free time. 5The results are entirely cons
2、istent(consist) with our earlier research.6The new secretary will relieve(relief) us of some of the paperwork.7He is widely acknowledged(acknowledge) to be the best man to finish the mission.8The winning numbers are randomly(random) selected by computer.9He defeated(defeat) champion in three sets. 1
3、0No one could have foreseen(foresee) things would turn out this way.用所给短语的正确形式填空at the very beginning， slow down， backwards and forwards， in spite of， put out， a series of， set out， be likely to， put aside， take off1The machine slowed_down and stopped.2In_spite_of great efforts we failed to carry ou
4、r plans through.3Weve put_out our new plan in motion.4Why dont you take your padded coat off?5There was a_series_of bangs as the box fell down.6She is very likely_to ring me tonight.7In his report he set_out his plans for the department.8He held the candle to the window and moved it backwards_and_fo
5、rwards.9At_the_very_beginning I paid little attention but slowly my interest awoke.10I have put_aside 5 minutes to talk with you.用介词、副词填空1These results are consistent with the findings of the previous study.2What they said is totally opposed to facts.3We ran out of our food.4He accused the man of ha
6、ving committed a crime.5Whey the tree fell down I could feel the house in a shock.6Everything in his room was set in a random order.7He saved my life at great risk to his own.8Were moved by his devotion to his students.9Oliver works hard so he is in favour with his boss.10I was aware of what he was
7、aiming at.完成句子1他按下按钮开动了机器。(set)He pushed a button and set the machine in_motion.2他设法及时完成了他的工作。He managed_to_finish his work in time.3起初他反对我们的建议，但我们设法说服了他。At first he was_opposed_to our suggestion but we managed to persuade him.4我坚决要求你立刻采取行动来处理这件事情。I insist_on_your_taking immediate action to deal wit
8、h the matter.阅读理解AGoing to outer space is a little like going camping. You have to carry with you all the food and equipment you need for your trip so your food cant be too heavy or hard to prepare. Plus there are no refrigerators to keep food cold and fresh.Food with all the water dried out is ligh
9、tweight and doesnt spoil. So many space foods are dried on Earth and stored in special packets. Some taste good right out of the packet. On Earth gravity is the force that keeps your feet on the ground and your sandwich on your plate. But theres no gravity in space. To keep food from floating away a
10、stronauts on the Space Shuttle attach the packet to a special tray. The tray can be fixed to a wall or to an astronauts lap. To prepare their food astronauts use liquid forms of salt and pepper. The liquid sticks to the food better. Regular salt and pepper would float away maybe up an astronauts nos
11、e. Liquids float right out of cups and glasses though. So astronauts drink everything from a small bag with a straw(吸管) that can be closed. Astronauts say that most space foods taste pretty good. Some such as apples and pudding are the same as the foods you eat on Earth. Astronauts eat tortillas(玉米粉
12、圆饼) instead of bread because they make fewer crumbs(碎屑). Floating crumbs could get stuck in equipment or an astronauts eyes. Your body uses food in space the same way it does on Earth. Your body must deal with waste in space too. During taking off and landing astronauts cant leave their seats to go
13、to the bathroom. They wear diapers(尿布) under their spacesuits instead. The Space Shuttle has a bathroom the size of a small closet. The toilet has bars that keep astronauts from floating away. A strong flow of air is used instead of water to flush(冲洗) waste down the toilet. Back on Earth its flushed
14、 awayor sometimes studied by scientists.1Why are many space foods dried on Earth and stored in special packets? ABecause they are full of nutrients. BBecause they are light and hard to break. CBecause they are easy to carry. DBecause they are nice to look.解析：细节理解题。根据第二段的Food with all the water dried
15、 out is lightweight and doesnt spoil.可知，除去水分变干的食品重量变轻，不易损坏，故选B。答案：B2Why do astronauts use liquid forms of salt and pepper to prepare food? ALiquid doesnt spoil. BLiquid is convenient to use in space. CLiquid is lightweight. DAstronauts are in great need of water.解析：细节理解题。根据第三段可知选B。答案：B3We can infer
16、from the passage that astronauts_. Adrink from cups and glasses Balways wear diapers in space Ccan move freely during landing Dmust pay attention to the crumbs in space解析：推理判断题。根据第五段的Floating crumbs could get stuck in equipment or an astronauts eyes.可知，飘浮的碎屑会粘到设备上或宇航员的眼睛上，故推断D项正确。答案：D4What is the pa
17、ssage mainly about? AAstronauts hard life in space. BHow astronauts go to the bathroom. CThe various foods astronauts eat in space. DHow astronauts eat and deal with waste in space.解析：主旨大意题。本文主要讲了在太空宇航员怎样吃东西和处理垃圾。故选D。答案：DBOn a clear night you might see the Moon some planets and thousands of sparklin
18、g stars. With bigger and bigger telescopes you can see more and more objects in the sky. And you can see those objects in more and more details. But scientists believe there are some things in the sky that we will never see. We wont see them with the biggest telescope in the world，on the clearest ni
19、ght of the year. Thats because theyre invisible. Theyre the mysterious dead stars called black holes. You might find it 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. The Sun certainly doesnt seem to be
20、getting old or weak. But stars do burn out and die after billions of years. As a stars 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 towards the centre. The star squashes into a smal
21、ler and smaller ball. If the star was very small the star ends up as a cold dark ball called a black dwarf. If the star was very big it keeps squashing inward until its packed together tighter than anything in the universe. Imagine if the Earth was crushed until it was the size of a tiny marble. Tha
22、ts how tightly this dead star a black hole is packed. What pulls the star in towards its centre with such power? Its the same force that pulls you down when you jumpthe force called gravity. A black hole is so tightly packed that its gravity sucks in everythingeven light. The light from a black hole
23、 can never come back to your eyes. Thats why you see nothing but blackness. So the next time you stare up at the night sky remember：theres more in the sky than meets the eye! Scattered in the silent darkness are black holesthe great mystery of space.5According to the article what causes a star to di
24、e? AAs its gases run out，it cools down. BIt collides(碰撞) with other stars. CThe star pulls in towards the centre. DAs it gets hotter and hotter，it explodes.解析：细节理解题。由第五段第二句话“But when the gas runs out，.”可知答案。答案：A6Which of the following statements is NOT a fact? ABlack holes are dead stars. BBlack hol
25、es have gravity. CBlack holes are invisible. DThere is nothing as mysterious as a black hole.解析：推理判断题。文章中六、七、八段中有对四个选项的介绍，可推知A、B、C三个选项是正确的，D项是主观推断，文中并无确切信息。答案：D7What happens AFTER a star dies? AIt becomes invisible. BIt falls to the Earth. CIt burns up all of its gases. DIt becomes brighter and easi
26、er to see.解析：细节理解题。由第七段中最后两句话“The light from a black hole can never come back to your eyes. Thats why you see nothing but blackness.”可知答案。答案：A8We cant see light when we look at a black hole because _. Amost black holes are so far away Bthe gravity of a black hole is so strong that it sucks the light
27、 inward Cas the stars gas runs out，it stops giving off heat and light Das a star cools，its outer layers pull in towards its centre解析：细节理解题。第七段中“A black hole is so tightly packed that .even light.”可知答案。答案：B.短文改错It was snowing heavily in Monday morning. Li Hua was at the bus stop，waited for Bus No. 60
28、1 to go to school. After a while a bus came and she got on them. There were much passengers in the bus. Some were talking and some were looking out of the windows. Suddenly the bus stops. The driver turned around and said “Sorry. The bus has been broken down. Please get off and help push the bus.” B
29、efore they heard this Li Hua and the other passengers got off the bus. We worked together，pushing the bus slow forward. Soon the bus was running again. All the passengers was smiling and the sun was shining.答案：It was snowing heavily Monday morning. Li Hua was at the bus stop， for Bus No. 601 to go t
30、o school. After a while a bus came and she got on . There were passengers in the bus. Some were talking and some were looking out of the windows. Suddenly the bus . The driver turned around and said “Sorry. The bus has broken down. Please get off and help push the bus.” they heard this Li Hua and the other passengers got off the bus. worked together pushing the bus forward. Soon the bus was running again. All the passengers smiling and the sun was shining.