Unit8 A green world Period 6 Study skills 课时周练（含答案）牛津译林版八年级英语下册

Unit 8 A green world
Period 6 Study skills
一、请根据所给的中文提示、英文释义，写出句中所缺单词
1. Greenhouse gases are___________(有害的)to the environment.
2. A zero-waste life follows the 6R rule-Refuse,Reduce,______________(再使用)，Repair,Recycle and Rot.
3. Police___________(形成)a search team to look for the young boy in the nearby woods.
4. There is an___________(油)painting show of the city development.
5. My father_______________(let sb do sth) me to play computer games for a short time after supper yesterday.
二、用所给词的适当形式填空
1. Have you found the__________(miss) watch yet
2. Underline the mistake and make the__________(correct).
3.___________ (nature) gas will run out one day.
4. 一My new computer doesn’t work well.
一Take it easy. It just needs___________(repair).
5. Coal________(form) over thousands or even millions of years.
6. Two_____________(family) live near the lake.
7. The room___________(clean) by me every day.
8. Water is______________(use) for all living things.
9. Some resources are renewable,but some are______________(renew).
10. The cake can_____________(make) in half an hour.
三、用适当的介词填空
1. Metal is used__________ making machine.
2. He spent a lot of money______________ buying new clothes.
3.——Isn't he grateful _________you ——No,he isn't.
4. My bike is old. Could I have a new one___________ his
5. Working____________ a volunteer is very meaningful.
6. Kindness and love can make the world a wonderful place to live_______.
7. I always get________ well with my friends.
四、单项选择
1. 一Do you know when and where the 24th Winter Olympic Games__________
-In Beijing and Zhangjiakou,in 2022.
A. is held B. will be held C. will hold
2. Do you know the 32nd Olympic Games___________ in Tokyo in 2020
A. is held B. hold C. will hold D. will be held
3. If you are over 18 years old,you _____________to drive a car in our country.
A. can allow B. can't allow C. can be allowed
4. -Final exam is coming,Tom. Don't watch TV for too long.
—Pm not a child any more. I_____________ what to do.
A. should always be told B. should always tell
C. shouldn’t always be told D. shouldn’t always tell
5. We should try our best to____________ waste.
A. produce B. reduce C. prevent D. throw
6. A lot of things _______________by people to protect the environment next year.
A. are doing B. are being done
C. has been done D. will be done
五、阅读理解
Trees in cities 'live fast but die young“ compared to forests in the countryside, warns a new study.
Researchers found that trees in cities die younger than ones in the countryside because of the higher levels of CO2. City-living trees suffer（遭受）a loss of carbon storage（碳储量）.That means trees produce less energy from the air.
Now researchers say more must be done to deal with the situation. Ian Smith,a PhD student of Boston University in the United States, said, 'Cities are in the important position in fighting against rising temperatures and increasing CO2.” “We find that tree planning alone may not be enough to keep and increase city canopy cover（树冠覆盖率）.Because of the age and size of the present canopy, efforts to improve and protect tree health are badly needed for increasing city tree cover and canopy cover. ”
The research team used a model to watch changes among street trees for several planning and management methods. Researchers also used the model to watch tree growth, death and planing rates（率） both among trees in Boston city and forests in the countryside in Massachusetts.
It was discovered that rates of carbon cycling and growth rates among city trees were nearly four times faster than those in the countryside. However, loss of carbon storage and death rates are also higher, especially death rates are more than double higher than those in countryside forests.
The study,published in PLOS ONE,has reminded scientists to encourage communities to do more to plant and protect trees. It is important to increase city canopy cover and carbon storage.
Researchers say planning and protecting will be needed to make sure cities can develop healthily, but more needs to be done to have a better understanding of city trees-which may be different from countryside forests.
1. According to the passage, which of the following is TRUE
A. The more carbon storage loses,the more energy the trees produce from the air.
B. The higher the levels of CO2 are, the harder it will be for the plants to survive.
C. If we plant enough trees,we are sure to increase city canopy cover.
D. Cities do better in fighting against rising temperatures and increasing CO2.
2. Paragraph 4 mainly tells us_________.
A. the results of the study
B. the discoveries from the researchers
C. the methods of the study
D. the suggestions from the researchers
3. What does “those“ in Paragraph 5 refer to
A. Death rates. B. Rates of carbon cycling.
C. Growth rates. D. Loss of carbon storage.
4. The writer’s main purpose of writing the passage is______________.
A. to teach us how to improve and protect tree health
B. to warn us that trees in cities live fast but die young
C. to let us have a better understanding of city trees
D. to tell us to take action to increase city canopy cover
六、阅读填表
阅读下面短文，根据短文中的信息完成文后表格（每空一词）。
Beyond its influence on health, not getting enough sleep can lead to car accidents or other mistakes. Here are what sleep researchers have found about how to sleep.
How much sleep do we actually need
It is known that all of us naturally need no less than eight hours of sleep per night. When we sleep below six hours per 24,we're at an increased risk of health problems. Some of us think we can make up any of those hours lost during the week on the weekends. Sadly there is no storage system for sleep in the brain.
Can we train ourselves to need less sleep
As a study in 1964,a 17-year-old boy named Randy Gardner stayed awake for 264 hours. How many people could do anything close to that without dying
When you are reading this,you might say you usually get six hours of sleep and feel just fine. Sleep experts often compare people without enough sleep to drunk drivers： They don't get behind the wheel thinking they're probably going to kill someone.
Can we drink coffee instead of sleeping
Coffee can keep us awake. Remember,too much coffee may throw off our sleep and energy cycles. So limit coffee and avoid caffeine for four to six hours before bediime.
Does a sense of purpose connect to sleep quality
A new research suggests a kind of strong connection between purpose in iife and sleep. People who have a greater sense of purpose usually have better physical and mental health, which in turn explains their higher-quaiity sleep. Perhaps developing a sense of purpose in iife could be as useful at improving sleep as the healthy habits above.
How to sleep
Introduciion Not getiing enough sleep can influence our health and cause many 1 mistakes.
Findings from 2 researchers How much sleep do we actually need Eight hours of sleep a night is 3 for all of us. Sleeping less than six hours a day can 4 the risk of health problems. It is 5 to make up the lost sleeping hours during the workweek.
Can we train ourselves to need less sleep People without enough sleep would insist that they were 6 ,but werent doing well at all.
Can we drink coffee instead of sleeping Using coffee instead of sleeping might lead to sleep 7 . Drink proper amount of coffee at proper 8 .
Does a sense of purpose connect to sleep quaiity A sense of purpose in iife is closely 9 with sleep quaiity. People with a greater sense of purpose may sleep 10 .
1._______ 2._______ 3._______ 4. _______ 5. _______
6._______ 7. _______ 8. _______ 9. _______ 10. _______