About of the earth covered with water,but we have less and less available fresh water.A.three-fourth;is B.three-fourths;isC.three-fourth;are D.three-fourths;are 题目和参考答案——青夏教育精英家教网—

题目内容

About of the earth covered with water,but we have less and less available fresh water.

A.three-fourth;is B.three-fourths;is

C.three-fourth;are D.three-fourths;are

练习册系列答案

相关题目

Competition is good for businesses. In the world of positioning systems, however, competition is also a must. 1. Now, China is building its own positioning system. It’s called Beidou.

China is only the third country in the world to own a positioning system. Only the United States and Russia have already developed their GPS or Glonass.

2.With it, the country no longer has to rely on foreign systems. It also shows the world that China has made much technological progress.

Work on the Beidou project began in 1994. However, the first two Beidou satellites were not sent into space until 2000. 3.These satellites have formed a global network. They began operations at the end of 2018. To further improve the system, China will send ten more Beidou satellites into space. It plans to complete the system before 2020.

4.It will provide a positioning accuracy of within ten centimeters for the Chinese military. The United States’ GPS only has an accuracy of around 30 centimeters.

The Beidou system offers services to ordinary users, too. In big cities like Shanghai, thousands of buses have been using the Beidou system. 5.

Moreover, most smartphones today can already receive Beidou signals. A phone salesperson in Beijing jokes, “Many people are used to saying, ‘I am using GPS.’ In fact, however, their phones have been using Beidou.”

根据短文内容，从方框中选出五个句子填入文中空缺处，使短文内容通顺完整。

A.Since then, China has launched dozens of Beidou satellites.

B.It is not wise for a country to rely on foreign systems for positioning.

C.People waiting for a bus can easily find out when it will come.

D.The American GPS, Russia’s Glonass have dozens of satellites to provide information across the globe.

E.The completed system will be more powerful than any existing foreign systems.

F.Beidou improves China’s national safety.

Now some women are spending a weekend at Mother’s Camp. There, husbands and children are not allowed. Why would a woman want to take a vacation without her family? Some women say they need time to be alone.

At Mother’s Camp, a woman has room to herself. She can sleep, read or watch TV, and no one will bother her. No children will ask, “Mom, what’s for dinner?” No husband will say, “Oh, dear, I can’t find any clean socks.” In fact, almost 50% of women in the United States work outside the home. Many of them work full- time and then come home to a second job: taking care of their homes and families. These working women say one of their biggest problems is housework. In the United States, working wives do about 75% of the housework.

Some women go to Mother’s Camp just to get a rest from housework. For two days they don’t cook, they don’t clean, they don’t look after their children and husbands. What do they do? They enjoy warm, sunny weather, walking, swimming or boating in a clear blue lake and sing songs around the camp-fire. They relax away from home. They have a really wonderful vacation at Mother’s Camp.

Word bank

allow 允许 alone 独自一人 bother 打扰

根据材料内容选择最佳选项，并在答题卡上将该项涂黑。

1.What can’t women do at Mother’s Camp?

A.sing songs around the campfire B.enjoy a wonderful vacation

C.swim in the lake D.bring their husbands and children

2.According to the passage, which of the following questions may make a mother unhappy?

A.“Mom, could you help me clean my socks?” B.“Mom, can I go to movies with Mary?”

C.“Mom, do you like my new dress?” D.“Mom, what do you think of my head teacher?”

3.Why do some mothers want to be alone in America?

A.Because they don’t like their husbands and children.

B.Because they have to work full – time.

C.Because they are too busy to have a rest.

D.Because they want a new and relaxing life.

4.What can learn about working women in the USA?

A.Housework is one of their biggest troubles.

B.Their husbands usually help them a lot with the housework.

C.All of them would like to take a vacation at Mother’s Camp.

D.They have to find two jobs to make more money.

5.What’s the best title for this passage?

A.Busy Working Mothers B.Husbands and Wives

C.No-housework Weekend D.Mothers in America

There was no bus in that small town. We had a_______ walk to get to the museum.

A.5 kilometers B.5 kilometer’s C.5-kilometer D.5-kilometers

How much do you know about Earth-the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let's look at some of them.

Where did water come from?

When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid(小行星) from outer space that hit our planet. But this theory has not been confirmed because there is very little related evidence(相关证据)to be studied.

What's in the core(地核)?

Scientists used to study meteorites(陨石)as small examples of Earth, believing that Earth's core was made of iron and nickel(镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity if its core contained only iron and nickel. Today, scientists continue to bring forward different theories, but none have been confirmed.

How was the Moon born?

Scientists have found that the chemical compositions(成分)of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun(旋转)very fast and threw off enough molten(熔化的)rock to later from the Moon.

1.What's the story mainly about?

A.How Earth came into being. B.Where Earth's water came from.

C.How the Moon was formed. D.Unexplained mysteries about Earth.

2.What do we know about where water may come from?

A.Earth's water may come from ice that melted 4.5 billion years ago.

B.Earth's water may come from a small planet that hit Earth.

C.We don't know where water came from.

D.There is lots of evidence that tells us where water came from.

3.What does the underlined phrase "bring forward" in Paragraph 5 probably mean?

A.Check. B.Raise. C.Improve. D.Receive.

4.Which of the following is TURE according to the passage?

A.Scientists believed Earth's core was made of meteorites.

B.A study in the 1950s proved that Earth's core is made of iron and nickel.

C.The Moon and Earth are made of similar materials.

D.Three possibilities of where the Moon came from are mentioned.

In front of these houses a river, which is not wide or deep but very clean.

A.stand B.stands C.run D.runs

Helping others is a great thing to do. You can learn new things and have fun. There are many ways of helping others in your community. You can help people, animals or the environment(环境). It can make you feel good too! How can you help?

Charities (慈善机构) are organizations that help others, for example, UNICEF or the World Wildlife Fund. You can help charities by giving your time, giving money or giving things that you own .You can also help people or places you know.

Volunteering

Volunteering is when you give your time to help others .It’s something which you do not have to do or for which you will not be paid. Some ways of volunteering are:

•visiting old people to talk to them or help them.

•walking dogs at an Animal Helper.

•cleaning up a park.

Fundraising

Fundraising is when you collect money to help others. Ways of fundraising are:

•making cakes or biscuits to sell.

•doing a sponsored (赞助) activity. For example, family and friends give you money if you finish a long walk.

Donating

Donating is when you give your things or money to help others. Some ways of donating are:

•giving your old toys or clothes to a charity that helps sick children or poor people.

•giving your old books to a library.

•giving your money to a charity.

So, what can you do to help others?

1.You’ll _______when you help other people.

A.feel uncomfortable B.have a great job

C.feel good D.have a hard time

2.How many ways of volunteering are mentioned in the article?

A.Two B.Three C.Four D.Five

3.The underlined word “fundraising” means “ _______” in Chinese.

A.募款活动 B.慰问活动 C.志愿活动 D.捐物活动

4.Which of the following is a good way to raise money for a charity?

A.Visiting a sick child. B.Doing a sponsored walk.

C.Cleaning up a library. D.Talking with old people.

5.Which of the following is a way of donating?

A.Cleaning up a park. B.Giving your old computer to a charity.

C.Taking care of sick people in hospital. D.Making pancakes or sandwiches to sell.

Aron Ralston is an American man who is interested in mountain climbing. As a mountain1. (climb), Aron is used to2.(take) risks. There were many times when he almost lost his life when climbing. On April 26, 2003, he had a serious mountain climbing accident in Utah. His arm was caught under a 360-kilo rock that fell on him when he was climbing by himself in the mountains. Because he could not free his arm, he stayed there for five days .But when his water3.(run) out, still no one found him. 4.(save) his own life, he used his knife to cut5. half his right arm. Then, with his left arm, he bandaged 6.(he) so that he would not lose too much blood. After that, he climbed down the mountain to find help.

After7.(lose) his arm, he wrote a book about his experience. In this book, Aron tells of the 8.(important) of making good decisions, and of being9.control of one’s life. His love for mountain climbing is so great10.he kept on climbing mountains even after this experience. His spirit encourages many people to face any difficulties bravely.

It is necessary _______ us to talk to our parents when we have difficulty dealing with our problems because they have more experience.

A.to B.of C.for

试题分类