创新题Plants take in carbon dioxide ________ the...

创新题Plants take in carbon dioxide ________ then turn it into oxygen in the air.

A.but B.although C.unless D.and

九年级英语单选题简单题查看答案及解析

Record fires sweeping across the Amazon this month have been catching the world's attention, because scientists and environmental groups are worried that they will make the climate worse and threaten biodiversity.

As the largest rainforest in the world, the Amazon is often called "the lungs of the world". It is also home to about 3 million plants and animals, and 1 million native people. Rainforests play an important role in the world's ecosystem because they can take in heat. They can also store carbon dioxide and produce oxygen, making that less carbon is given off, mitigating the effects of climate change.

"Any forest destroyed is a threat to biodiversity and the people who use that biodiversity," said Thomas Lovejoy. "The most serious threat is that a lot of carbon goes into the air," he added. "In the center of the global climate crisis, we cannot afford more damage to a major source of oxygen and biodiversity. The Amazon must be protected," Antonio said.

Data from the National Institute for Space Research (INPE) show that the number of forest fires in Brazil quickly increased by 82 percent from January to August this year from a year ago. "The forest areas in the Brazilian Amazon have dropped between 20 and 30 percent compared to the last 12 months," Carlos Nobre said.

Word Bank

threaten　　 威胁　　 biodiversity　　 生物多样性　　 ecosystem　　 生态系统　　 crisis　　 危机　　 data　　 数据

1.What does the underlined word "they" refer to in Paragraph 1?

A.fires B.scientists

C.environmental groups D.rainforests

2.Which of the following words has the closest meaning with the underlined word "mitigating" in Paragraph 2?

A.reducing B.increasing

C.causing D.producing

3.What can we know from Paragraph 3?

A.The dry weather leads to the rainforest fires.

B.Carbon dioxide is important in the air.

C.Oxygen has nothing to do with global climate crisis.

D.Forests play an important role in biodiversity.

4.Which of the following statement is true according to the passage?

A.3 million plants, animals and people live in Amazon.

B.Rainforests can store carbon dioxide and produce oxygen.

C.Carbon dioxide goes into the air will do no harm to us.

D.Ecosystem can take in heat and give off carbon dioxide.

5.What's the best title of the passage?

A.The climate change crisis. B.The forest areas are decreasing.

C."The lungs of the earth" is burning. D.The world's ecosystem is under attack.

九年级英语阅读单选中等难度题查看答案及解析

How can we protect the Earth? One problem to solve is climate(气候)change. You might wonder about climate change. What is it, exactly?

Gases surround the Earth. 1. Sunlight passes down through the gases. The gases trap(储存)the sun's heat and act like blanket. Without these gases, the Earth would be very cold. The trouble comes when humans add too many gases to the atmosphere. The gases build up and trap even more heat. This causes changes in climate. The Earth becomes too warm.

2. There's another gas causing climate change. No one talks about it as much. It is nitrous oxide(氧化亚氮). Many call it laughing gas. Dentists may give patients nitrous oxide so they will not feel pain. The atmosphere has small amounts of nitrous oxide. But nitrous oxide can stay in the atmosphere more than 100 years which can change the climate a lot.

Nitrous oxide forms naturally. 3. Bacteria are living organisms(生物)made of single cells. Farmers use nitrogen fertilizer(氮肥)to help grow bigger crops. The bacteria in the soil take the nitrogen from the fertilizer and make more nitrous oxide with it.

So how can we help? "Number one is to not waste food," Wagner Riddle, a scientist from Canada, said. 4. That number comes from a U. S. university study. "There is a lot that goes into making food", Wagner Riddle says. "So then if it's wasted, it's for nothing."

A.That's the reason for climate change.

B.It comes from bacteria(细菌)that live in the dirt.

C.Carbon dioxide(二氧化碳)is one gas that traps heat.

D.More than one-third of all food created in the U. S. is wasted.

E.These gases reach high into the sky and are called the atmosphere(大气层).

九年级英语补全短文5选4中等难度题查看答案及解析

Forests are the lungs of the earth. Without them, it cannot breathe. It needs its forests to remove carbon dioxide from the air and to make oxygen. In many countries, such as New Zealand, Canada, and Brazil, forests were cut down to1. (提供)wood to build houses. Cutting down trees is h2. to human beings,animals and plants. Many young volunteers around the world are working in their holidays to plant new trees to replace them.

These young men and women f3. many difficulties when they plant new trees. The weather may be very hot and dry or may be very cold and wet. Tree 4.(种植者) are changing the world. They plant different types of trees so that birds and animals can live in the forests. They b5.that in 50 years their little trees will become beautiful forests.

九年级英语单词填空中等难度题查看答案及解析

[素材选自One Story A Day Book 2]

为未来种树

Jim Flinn and his family have been taking part in Earth Day celebrations to plant trees for as long as he can remember.

This year, Jim decided to invite some of his classmates to ____ the family planting trees on Earth Day.

“Did you know that each day, one mature ____ produces enough oxygen for four people to breathe？” Jim asked his friends. Before anyone could respond, he ____, “But that's not all. Trees also remove the ____ carbon dioxide that pollutes our air.”

According to Jim, what is good for the earth is good for ____. “My parents always encourage me to be good to the earth，” he explained to his ____.

When the trees ____, the Flinns made sure they had lots of water. Then, with shovels and pails, they headed out to the field and started digging.

“First，make a big ____,” explained Jim, who knew what he was doing after years of practice. “Make sure the roots will fit into the hole. Put a little water in the bottom of the hole and put your tree ____. Then, cover the ____ and fill the hole with dirt. And use your feet to pack it in well around the ____ tree.”

You could tell that this young boy took pride in what he ____ his family did each spring. “We don't have to plant hundreds of trees，” said Jim's father. “Even if you can only ____ one tree each year, it will add up in the end.”

____ they worked hard for five hours, twenty trees were planted on the site.

Seeing the new trees standing upright straight, Jim's friends ____ to join the event again next time. They think the Earth Day is really meaningful for everyone.

Word Bank

mature 成熟的　 carbon dioxide 二氧化碳

shovel 铁铲 pail 桶 root 根

1.A.join B.spend C.bring D.take

2.A.animal B.human C.tree D.flower

3.A.continued B.stopped C.talked D.promised

4.A.useful B.harmful C.helpful D.painful

5.A.something B.someone C.everyone D.nobody

6.A.students B.neighbors C.teachers D.classmates

7.A.went B.arrived C.cut D.found

8.A.well B.concert C.hole D.research

9.A.inside B.outside C.above D.below

10.A.tools B.leaves C.knives D.roots

11.A.new B.old C.large D.ugly

12.A.and B.but C.as D.for

13.A.clear B.plant C.cover D.burn

14.A.Until B.As C.After D.Before

15.A.refused B.invited C.decided D.received

九年级英语完型填空困难题查看答案及解析

A: What kind of things do you do in your free time?

B: I'm really into reading books. 1.

A: I like to do just about anything outside. Have you ever camped　 in the Boundary Waters?

B:2.I heard it’s a beautiful place to go .

A: It's fantastic ! My family and I like it very much.

B: 3.

A:Sure would you like to see them?

B:4.So, you must be pretty interested in taking photos then.

A: I'd call it one of my hobbies. Do you know much about taking photos?

B: 5.I took quite a few classes at a club.

A: Really? Can I go with you next time?

B: Of course

A.What about you?

B.In fact. I do.

C.Do you have any photos of your camping trips there?

D.Yes, I'd love to.

E.Here you are.

F.No, but I've always wanted to go there.

G. What are your plants?

九年级英语补全对话7选5中等难度题查看答案及解析

People depend on plants. We use plants for food, cloth, shelter (住处), and even the air we breathe (呼吸).

Plants keep our air and water clean. Green plants give us oxygen (氧气). Oxygen is part of the air we breathe.

Plants are also part of the water cycle (水循环). Most of the water that a plant takes in goes back into the air.

Plants give us a lot of the food on the earth. Fruits, vegetables, and grains (谷物) come from plants. Without plants, we would not have bread, rice, carrots, apples, oranges, or bananas! Many people are growing plants to eat in their own gardens at home. Having your own garden helps the earth as well.

When you grow your own fruits and vegetables, you help cut down on pollution because big trucks don’t need to take your food to shops. You also help reduce the amount of rubbish because you don’t need to use bags for packing your food. You can just pick it out of the ground or off a plant and put it into a basket!

Trees are an important plant resource (资源). Trees provide wood to build homes and furniture. Trees are used to make lots of things around your home and at your school. And trees provide fruits that are good for you. Without trees, the earth would be a very different place.

1.________ is part of the air we breathe.

A.Sunlight B.Water C.Food D.Oxygen

2.What happens to most of the water that a plant takes in?

A.It goes back into the air. B.It stays in the plant.

C.It goes into the ground. D.It stays in the river.

3.What does the phrase “cut down on” mean in Paragraph 5?

A.Cause. B.Accept. C.Reduce. D.Expect.

4.What is the best title of the passage?

A.A Different Place B.The Uses of Plants

C.Food on the Earth D.Gardens at Home

5.You would find the passage in ________.

A.an interesting novel B.a book about animals

C.a popular play D.a book about nature

九年级英语阅读单选中等难度题查看答案及解析

Jane works as a secretary（秘书）in a small office. Her boss, although kind, is sometimes a bit foolish. He likes to keep lots of plants in front of their office to attract（吸引）customers.

It seems to work, since Jane is often busy greeting new customers. Nearly every customer likes to take a look at the colorful plants.

One of Jane's other responsibilities（职责）is to water the plants. This is one of her favorite jobs to do around the office, as it allows her to spend some time outside away from her desk. She does it every morning before staring the rest of her work day.

One afternoon, her boss came over to her desk and kindly asked her to water the plants, as she hadn't done it yet that day.

“But sir, it's been raining outside all morning …” she said.

“Oh! I see, that explains it. Well here then, you can take my umbrella while you water them,” the boss replied.

1.Where does Jane work?

A.In a mall. B.In an office. C.In a hospital.

2.Why does the boss keep many plants?

A.He likes flowers. B.Jane likes flowers. C.To attract customers.

3.What other responsibilities does Jane have besides greeting customers?

A.To water the plants. B.To look at the plants. C.To take umbrellas.

4.It has been raining all morning, hasn't it?

A.Yes, it has. B.No, it hasn't. C.Yes, it does.

5.What is Jane's boss like?

A.He is clever. B.He isn't kind. C.He's a bit foolish.

九年级英语阅读单选简单题查看答案及解析

为未来种植

Jim Flinn and his family have been taking part in Earth Day celebrations to plant trees for as long as he can remember. Each spring, the Flinn family puts down a few more roots.This year, Jim decided to _____ some of his classmates to join in.

“Did you know that each day, one mature tree _____ enough oxygen for four people to breathe？” Jim asked his friends. Before anyone could respond, he continued, “But that's not all. Trees also remove the _____ carbon dioxide that pollutes our air.”

According to Jim, what is good for the earth, is good for _____. “My parents have always _____ me to be good to the earth，” he explained to his classmates. “They say that we should respect our planet and make sure that it's _____．”

When the trees arrived, the Flinns made sure they had lots of water. Then, with shovels and pails, they headed out to the_____ and started digging.

“First，make a big hole，” _____ Jim. “Make sure the roots will fit into the hole. Pour a little water into the hole and put your tree _____. Second, cover the roots and fill the hole with dirt. And ______ use your feet to pack it in well around the new tree.”

You could tell______ this young boy took pride in what he and his family did each ______. “We don't have to plant hundreds of trees，” said Jim's father. “Even if you ______ only plant one tree each year, it will add up in the end.”

______ five hours of hard work, twenty trees were planted on the site.

Seeing the new trees standing upright neatly, Jim's______ decided to join the event again next time.

1.A.invite B.allow C.force D.take

2.A.grows B.keeps C.gives D.produces

3.A.useful B.harmful C.helpful D.painful

4.A.nothing B.someone C.everyone D.nobody

5.A.believed B.encouraged C.agreed D.warned

6.A.healthy B.poor C.weak D.dangerous

7.A.office B.bank C.kitchen D.field

8.A.noticed B.controlled C.explained D.repeated

9.A.inside B.outside C.above D.below

10.A.then B.once C.still D.never

11.A.how B.that C.if D.where

12.A.spring B.summer C.fall D.winter

13.A.need B.must C.should D.can

14.A.When B.Before C.After D.Until

15.A.neighbors B.relatives C.teachers D.friends

九年级英语完型填空困难题查看答案及解析

In our daily life, we can live a low-carbon(低碳) life by paying attention to how we dress, eat and live.

Wear“out”

I prefer simple clothing and buy new clothes only when I really need them. I don’t mind using the same clothes for over 10 years. My family members never throw their clothes away. Instead, we give them to others who are in need. If the clothes are really worn out, we cut them into pieces and use them to clean the floor.

Simple eating habits

My family eat more vegetables and less meat. I often tell my family members not to eat junk food. Our cooking style is mainly steaming or boiling as it is healthier and saves energy.

Live on less energy

I also pay attention to the use of electricity. My family members get into the habit of turning off the lights when leaving a room. When we take a shower, we’ll set the water temperature to around 40℃. All these things are good for saving energy.

We hope that everyone can really do something to protect the earth.

1.What will the writer's family do with the clothes when they are worn out?

A.never throw their clothes away B.give them to others

C.clean the floor D.cut them into pieces

2.What energy-saving methods have been mentioned in this passage?

A.Saving electricity B.Reusing waste materials

C.Simple eating habits D.All above

3.What does the passage mainly talk about?

A.environmental protection B.recycling old clothes

C.low-carbon life D.saving electricity and water

九年级英语阅读单选中等难度题查看答案及解析