Trees in the Amazon rainforest are showing sc...

Trees in the Amazon rainforest are showing scientists the past in order to help them predict the future.

Have you heard about tree rings ? Some trees create rings every year ________they grow. These rings can be ______in the tree trunks when the trees are cut down .Counting tree　 ______can tell us how old the tree is , but UK scientists have ________a way of learning about the climate of the rainforest in the past from the tree rings .

Growing in the Amazon rainforest, some trees only have short roots. This means that the trees depend on rain water, _______ the water that naturally occurs deeper underground . Therefore, the rings of tree trunks(树干) can _______the rainfall in the forest in the past.

The rings can help us understand the rainfall, _______the climate of the Amazon forest over the last 100 years .What scientist want to know, however, is how the rainforest will be affected by the world’s rising temperatures. Will it _______wetter or drier?　 The Amazon rainforest is known as the “lung（肺） of the earth ” for the amount of CO2 _______the trees take in from the air every day. A warming world could have a very bad effect on this important forest, but with more information about the ______ , scientists hope to know what one of the most important rainforests in the world will be like in the future .

1.A. as　　 B. since　　 C. although　　 D. after

2.A. heard　　 B. drawn　　 C. produced　　 D. seen

3.A. rings　　 B. leaves　　 C. fruits　　 D. roots

4.A. changed　　 B. forgotten　　 C. discovered　　 D. imagined

5.A. rather than　　 B. as for　　 C. because of　　 D. thanks to

6.A. influence　　 B. cause　　 C. increase　　 D. show

7.A. yet　　 B. ever　　 C. even 　　 D. still

8.A. taste　　 B. smell　　 C. sound　　 D. become

9.A. when　　 B. that　　 C. where　　 D. why

10.A. humans　　 B. animals　　 C. past　　 D. future

九年级英语完型填空中等难度题查看答案及解析

The Amazon rainforest is_____ rainforest in the world.

A.large B.larger C.largest D.the largest

九年级英语单选题中等难度题查看答案及解析

The world's largest rainforest, the Amazon, grows over eight counties and covers 40 percent of South America. It makes about one—fifth of Earth's oxygen. People call it "the lungs of our planet.

However, the rain forest is in danger now. A large fire broke out in the Amazon last moth. As of Aug 27, it had lasted for 22 days.

In fact, the Amazon has seen a large number of fires this year. Between January and August, there were over74, 000fires —the highest number since 2013, the BBC reported.

Most of the fires came from human activities" CNN noted. Farmers in the Amazon have long used fire to prepare land for planting. But these fires can easily get out of hand.

The Brazilian government has sent soldiers to fight the fires. But scientists have said that it will take around 20 to 40 years to rebuild the forest's ecosystem. They have also said that the fires have destroyed 15 to 17percent of the rainforest, China Daily reported.

Fires in the forest

The Amazon is home to around 1 million indigenous(土著的）people from up to 500 tribes(落）、About 3million species of plants and animals also live there, including jaguars, sloths and river dolphins. Many of them have lost their homes because of the fires. Here is the number of fires that have broken out in Brazil over the years.

Total numbers of fires between Jan 1 to Aug 20:

1.People call the Amazon rainforest" the lungs of our planet" because　　　　 .

A.it lies along the Amazon river B.it's the world's largest rainforest

C.it makes one—fifth of Earth's oxygen D.it grows over many countries

2.We know from CNN's report that the fire　　　　 .

A.lasted for 22 days B.resulted from human activity

C.is helping farmers plant crops D.is out of control

3.The chart(图标)tell us the total numbers of fires between Jan1 to Aug20　　　　 .

A.is the least in 2019 B.is the most in 2016

C.is the same every year D.is the most this year

4.The last paragraph was written to show　　　　 .

A.how much damage the fire has done

B.what we should do to rebuild the forest

C.how the Brazilian government stopped the fire

D.the importance of protecting the ecosystem

5.We can learn from the text that　　　　 .

A.farmers shouldn't plant crops near the Amazon rainforest

B.Amazon forest's ecosystem will repair itself

C.it will take a long time to rebuild the Amazon

D.earth will run out of oxygen soon

九年级英语阅读单选困难题查看答案及解析

The Amazon (亚马逊)rainforest is home to millions of different kinds of animals, plants, and birds. Most of the world’s fresh water is here and the forest plants c1. the Earth’s air every day. Chico was born near the Amazon town, Brazil(巴西), in 1944 and started working when he was very young. Like the rest of his family, the boy got the money by taking a little rubber from the trees in the forest. The forest and its people lived together comfortably and peacefully.

But some people think too much about the p2. and never think about the future. In 1980, the forest was burned to build roads, houses and factories. Chico was angry; he wanted to save the forest! He talked to the government workers, but they didn’t listen to him. They were still clearing the rainforests to make quick, easy money. “ Many voices are s3. than one,” he thought, so Chico held group meetings. He discovered that hundreds of people agreed with him. His hope grew. More people came together to try to stop the work of the forest clearers. Large areas of the forest were saved. Later he traveled to many other countries for i4. help. People soon became very much interested in this brave Brazilian. In the next few years Chico’ s name became famous all over the world. The government of Brazil started making plans to p5.large areas of the Amazon rainforest.

But as Chico’s d6. started coming true, someone stopped him in the only possible way. The famous forest fighter was murdered (谋杀)right outside his home on December 22, 1988. Chico’s life was cut short, but his brave new ideas continued in other people. One man c7. the world’s ideas. After his death, people around the world sent money to help Chico’s work.

九年级英语单词填空中等难度题查看答案及解析

Which picture shows "The kids are learning to plant trees."?

A. 　　 B. 　　 C. 　　 D.

九年级英语单项填空中等难度题查看答案及解析

Scientists say that banana trees may disappear(消失) from the world 　　　 banana cancer.

A. because of　　　　 B. instead of　　　　　　 C. as for　　　　　　　　 D. together with

九年级英语单项填空简单题查看答案及解析

________of the two scientists show great interest in the new virus（病毒）

A.Both B.Neither C.All D.None

九年级英语单选题中等难度题查看答案及解析

When you are planting trees, the trees ________ straight in the hole.

A. must put　　 B. must be put　　     C. are putting　　     D. is put

九年级英语单项填空简单题查看答案及解析

Sheridan is a town in Indiana, USA. There are lots of trees near the public schools in the town. Their leaves turn sunlight into energy (能量).

In Sheridan, the sun not just provides energy for plants. It keeps schools running, too. The schools use solar panels (太阳能电池板) to turn sunlight into energy.

The science behind solar energy is not new. But Sheridan Community Schools is the first school district (学区) in Indiana to be completely solar-powered. The district finished putting in solar panels for all three of its schools in 2016. Some of the panels can turn to follow the sun across the sky.

In 2008, fewer than 1,000 schools used solar power. By 2014, there were 3,727 schools with solar panels in the USA. These numbers come from a report by the Solar Foundation. Roxie Brown, a program director there, said that the number of schools with solar panels has continued to go up since 2014.

Solar energy has some advantages over other energy sources (来源). Sunlight is a renewable source, which means it won't run out. Solar panels don't harm the environment. Also, sunlight is free. So by using solar power, schools can save money on energy costs.

Brown thinks more schools should run on solar energy.“The sun is Earth's energy source,” she says. “We’re trying to make it the energy source for our houses, cars and schools, too.”

But using solar energy isn't always easy. Solar panels can be expensive to put in. The panels also take up space. But for many schools, going solar is worth it.

1.What does the underlined word“It”refer to?

A. A plant. B. The sun.

C. A district. D. The solar panel.

2.Sheridan Community Schools put in solar panels ________.

A. in 2008 B. for all its schools

C. with the help of the Solar Foundation D. together with other 1,000 schools in the USA

3.According to Roxie Brown, the number of schools with solar panels ________.

A. has risen B. has fallen C. is too small D. is large enough

4.What does the underlined word “renewable” mean in Chinese?

A. 可开发的 B. 可替代的 C. 可再生的 D. 可加工的

九年级英语阅读单选中等难度题查看答案及解析

Sheridan is a town in Indiana, USA. There are lots of trees near the public schools in the town. Their leaves turn sunlight into energy (能量).

In Sheridan, the sun not just provides energy for plants. It keeps schools running, too. The schools use solar panels (太阳能电池板) to turn sunlight into energy.

The science behind solar energy is not new. But Sheridan Community Schools is the first school district (学区) in Indiana to be completely solar—powered. The district finished putting in solar panels for all three of its schools in 2014. Some of the panels can turn to follow the sun across the sky.

In 2008, fewer than 1,000 schools used solar power. By 2014, there were 3,727 schools with solar panels in the USA. These numbers come from a report by the Solar Foundation. Roxie Brown, a program director there, said that the number of schools with solar panels has continued to go up since 2014.

Solar energy has some advantages over other energy sources (来源). Sunlight is a renewable source, which means it won’t run out. Solar panels don't harm the environment. Also, sunlight is free. So by using solar power, schools can save money on energy costs.

Brown thinks more schools should run on solar energy. “The sun is Earth’s energy source,” she says. “We’re trying to make it the energy source for our houses, cars and schools, too.”

But using solar energy isn’t always easy. Solar panels can be expensive to put in. The panels also take up space. But for many schools, going solar is worth it.

1.What does the underlined word “It” refer to?

A.A district. B.The solar panel. C.A plant. D.The sun.

2.Sheridan Community Schools put in solar panels _________.

A.for all three of its schools B.in 2008

C.with the help of the Solar Foundation D.together with over 1,000 schools in the USA

3.According to Roxie Brown, the number of schools with solar panels _________.

A.has fallen B.has risen C.is too small D.is large enough

4.What does the underlined word “renewable” mean in Chinese?

A.可替代的 B.可开发的 C.可加工的 D.可再生的

5.Which of the following is the writer’s opinion?

A.Solar panels will take up less space. B.It will never be difficult to use solar energy.

C.It may cost a lot to put in solar panels. D.Going solar is a wise choice for every school.

九年级英语阅读单选简单题查看答案及解析