题目内容

/'?sevr?l '?let?z ??ra?vd et ma? h??m ??s ?m??n??/

A.Some letters arrived at my home this morning.

B.Several letters arrived at my home this morning.

C.Sandy's letters arrived at my home this morning.

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Mrs. White walks a dog in the park nearby every morning it’s rainy or windy.

A.since B.because C.unless D.until

Big data (数据) is a lot of sets of information that are put together so they can be used by a computer program. The computer program looks for different kinds of answers or patterns in the data. Big data can have different kinds of information from many sources, such as information that comes from schools, social media sites, companies and governments. One set of data can have people’s names and addresses. Another set can have what they like, where they go to school, and how much time they spend on the computer.

Big data can be used in many ways. The government uses it to understand how many people travel on buses or trains. This information is then used to make bus or train systems better. Some schools use big data to understand which children may need extra help in class. The teacher can then give certain students more help or support so those students can succeed in school. Companies use big data, too. It helps them understand who buys their products. For example, one company uses weather data to see when people eat the most ice cream.

Big data can be used for good reasons. Some hospitals use big data to predict if a baby who is born too early will get sick. The hospital can then take extra steps to take care of that baby so he or she does not get sick. Big data can also be used for bad reasons. It can be used to predict which kinds of people are likely to break the law or hurt others, even if they have not done anything wrong.

How can big data be used for good and bad thing? It is because the computer programs are written by people. People think in a certain way, and they build a model of those ideas. These ideas are then used to look at the data. Sometimes, these ideas are helpful for people or businesses. Other times, bad ideas can cause problems for certain groups of people.

1.Big data can have different kinds of information from many sources. Information that comes from ____________ is not mentioned (提及) in this passage.

A.schools B.governments C.police stations D.hospitals

2.One company uses weather information to ___________.

A.help children in need B.find out who take the bus or train

C.know when people will visit the hospital D.understand when people will need ice cream

3.The main idea of Paragraph 3 is that ____________.

A.we can use big data in a number of ways

B.big data can be only used for good reasons

C.big data can be used for both good and bad reasons

D.we can use big data to stop babies from getting sick

4.The passage is mainly about ____________.

A.what big data is and how it is used

B.what schools and hospitals people like

C.where important data is collected and stored

D.how big data is controlled by governments and companies

5.This passage is _____________.

A.sad and personal B.personal and scientific

C.informative but silly D.scientific and informative (提供有益信息的)

-Did she____where she was going?

-No, she just left without saying anything.

A.mention B.realize C.promise

-Do you like this book?

-No,it is boring.

A.not interesting B.not amazing C.not exciting

Now machines are widely used all over the world. Why are machines so important and necessary（必要的）for us? Because they can help us to do things better and faster.

A washing machine helps us to wash clothes fast. A printing machine helps us to print a lot of books, newspapers, magazines and many other things fast. Bikes, cars, trains and planes are all machines. They help us to travel faster than on foot.

The computer is a wonderful machine. It was invented not long ago. It not only stores（贮存） information (信息）but also stores numbers millions of times as fast as a scientist does.

Let’s study hard and try to use all kinds of machines to build China into a modern country.

1.Machines can help us to do things better and faster, so they _______.

A.are difficult to make B.are expensive C.are important and necessary

2.We have to travel on foot without _______.

A.bikes B.machines C.planes

3.Computers can store information and numbers _______ a scientist does.

A.a little faster than B.as fast as C.much faster than

4.If we want to build China into a modern country, we must _______.

A.study hard B.try to use all kinds of machines C.A and B

5.A printing machine can help us _______.

A.print a lot of books B.read more books C.wash clothes fast

A poor (贫穷的) man goes to a rich (富有的) man's house. On the way, he sees a box under a tree. He opens it and sees some apples in it.

The man thinks, "I will have dinner in the rich man's house. He will give me nice food to eat. It will be very delicious." So he doesn't eat the apples. He throws them away (扔掉).

The man walks on and comes to a river. He can't go across it. He waits for some time, but there is no boat coming. "What a bad day! I can't go to the rich man's house today," he thinks.

The man has to go back home. He doesn't have any food at home. He is very hungry. He thinks of the apples. He goes back to the tree. He is very happy to see them near the tree, and he eats them quickly.

The story tells us: Do not throw away good things; you may need them some other time.

1.What does the word “delicious” mean(意思是)？

A.实惠的 B.方便的 C.美味的

2.Why can't the poor man go to the rich man's house?

A.He can't go across a river. B.He can't walk.  C.He thinks of the apples.

3.The poor man sees ____in a box under a tree.

A.a boat . B.a river. C.some apples.

4.The poor man is____ to see apples when he goes back to the tree.

A.happy                             B.sad C.quick

5.Which of the following is NOT true ?

A.The poor man doesn't have any food at home.

B.The poor man is very hungry, so he goes home for dinner.

C.The poor man waits for some time, but there is no boat coming.

Tom has much difficulty the article so he often asks me help.

A.to understand, with B.understanding, of

C.to understand, for D.understanding, for

How do you ____ with your computers，MP4 players and mobile phones when they're broken? Most people just ____ them away. With the development of electric industry, e-waste pollution has become a serious_____ .

It’s ____ to pay attention to e-waste. It can either be valuable or harmful, depending on ____ we dispose（处置）it. E-waste is a valuable urban mine（城市矿藏）. The value of the metals, like gold and silver in the waste ____ the world, is amazing, and the metals can be reused. But if people throw them away, the toxic chemicals（有毒化学物质）can get into the earth or air, affecting the environment and people’s ____ .

Here is an example. Apple now recycles the used products in China when they are buying new ones.

The company will test and repair the used ones and ___ them at lower prices. To help reduce ____, we can_____ take computers and phones to see if companies offer recycling programs.

1.A.get B.deal C.make D.sell

2.A.keep B.throw C.get D.put

3.A.problem B.look C.subject D.question

4.A.unnecessary B.unhappy C.important D.impossible

5.A.why B.who C.how D.where

6.A.around B.at C.on D.of

7.A.money B.cloth C.health D.value

8.A.make B.give C.send D.sell

9.A.e-waste B.waste C.paper D.metals

10.A.hardly B.not C.never D.also

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