精英家教网 > 高中英语 > 题目详情

【题目】__________ H7N9 is a deadly virus, it is still safe to eat thoroughly-cooked chicken.

A. Until B. While

C. If D. Since

【答案】B

【解析】句意:尽管H7N9是一种致命的病毒,但吃彻底煮熟的鸡仍然是安全的。前后为让步关系,用while

练习册系列答案
相关习题

科目:高中英语 来源: 题型:

【题目】C

As every computer owner knows, when their machines run a complex program they get pretty hot. In fact, cooling the processors can be expensive, especially when you're dealing with huge banks of computer servers. But what if that energy could heat private homes? A Dutch energy firm aims to do just that.

Data centers of large Internet firms, such as Google, Apple, Microsoft and others, contain thousands of computer servers. As they process information they generate enormous amounts of heat requiring cooling towers that dissipate it into the atmosphere.

A Dutch firm thinks paying for electricity to run the servers and then paying again to cool them is a waste of energy.

Boaz Leupe, CEO of the start-up Nerdalize, says it’s actually quite simple.

"We don't actually have to build the data center, which saves a lot of costs in infrastructure and we don't have the cooling overhead, plus that you have the environmental benefit, that the kilowatt hour you are using is used twice, once to heat the home and once to compute the clients task without the cooling overhead," says Leupe.

The company developed what it calls an e-Radiator, a computer server that also works as an alternative heating source. Leupe says that five Dutch homeowners are experimentally using them in their homes.

“We reimburse the electricity the server uses, and that we can do because of the computer clients on the other side, and, in that way, home owners actually get heating for free, and computer users don't have to pay for the overhead of the data center,” says Leupe.

One of the participants in the year-long experiment, Jan Visser, says the amount of heat produced by e-Radiator depends on the work being done by the server’s processors so it cannot be used as the primary source. But he is ready to try it.

“If it gives good enough warmth, you can use less of your existing central heating, and there is the chance for a home owner to pay less bills.”

Nerdalize says e-Radiators generate temperature of up to 55 degrees Celsius and could save up to $440 in annual heating costs.

【1】Which one is true according to the passage?

A. It is expensive to deal with huge banks of computer servers.

B. A Dutch energy firm attempted to heat private homes.

C. Computer servers generate large quantities of heat.

D. The cooling tower is a waste of energy.

【2】The underlined phrase “overhead” in the third paragraph probably means______.

A. daily cost B. fixture

C. forehead D. method

【3】What is NOT true about e-Radiator according to the passage?

A. It is a computer server used as an alternative heating source.

B. It has been launched onto the market.

C.It is environmentally friendly.

D. It can save users’ money.

【4】Which of the following can be the best title for the passage ?

A. A New Kind of Data Servers

B. Data Servers Could Heat Private Homes

C. How to Heat the Private Homes with Computers

D. An Alternative Heating Source

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】The house, ______the walls are green, is where my grandfather used to live ten years ago.

A. which B. of which C. whose D. that

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】 ______ is troubling me is ______ I don’t understand ______ he said.

A. What; that; what B. It; that; what

C. That; that; what D. what; that; which

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】A

While reading a story on 20-somethings complaining about how the economy is ruining their life plans, I couldn't help but think the 20-somethings sound like a bunch of spoiled children who grow up expecting everything to be easy for them. As a 20-something myself, I certainly share their disappointment –my husband and I probably won't be able to buy a house until we're in our forties, and we two are burdened by student loans. But why should it be different? Being young people in America, shouldn't they take up all of the challenges and opportunities that this country offers?

Consider some of these views shared in the story: Jennifer, 29, owner of a two-bedroom apartment with her husband, worries that she won't be able to have children for at least a decade because they can't afford to buy a house yet.

I read that, and I thought what planet she is living on where you need to own a house in order to have kids? Has she ever visited a developing country, or even downtown areas in this one? Home ownership is a luxury(奢华), not a fertility requirement.

A 26-year-old man in the story is disappointed that he can't afford to get a Ph. D. in literature. Well, that sounds a bit like expressing disappointment that no one will pay you to write poetry on the beach in Thailand for five years.

Yes, it's sad that these young people feel so lost. But I think the problem is their extremely high expectations, not economic reality. Beth Kobliner, author of Get a Financial Life: Personal Finance in Your Twenties and Thirties, says that she thinks people's expectations grow up when their wealth appears to be increasing. Their parents probably see their home values rise along with their investments. "So we have people who have grown up in an environment where people have great expectations of what living well means," says Kobliner.

This recession(经济衰退) will certainly play a role in forcing those expectations into more realistic group. In the meantime, it seems much better for our mental health to focus on being grateful—for our one-bedroom apartments, for living in modern cities, or perhaps just for being able to eat three meals a day—than on longing for some kind of luxurious life.

【1】In the passage, the writer mainly talked about _____.

A. young people’s high expectations result in their disappointment

B. the 20-somethings' high expectations and ambitions

C. the poor living conditions of the 20-somethings

D. the necessity of receiving high education

【2】In the writer’s opinion, what is the reason for young people’s dissatisfaction?

A. The declining economy.

B. Their high expectations.

C. Poor living conditions.

D. Their constant failure.

【3】What are some young people complaining about?

A. They are complaining their aims are hard to achieve.

B. They are complaining their parents can’t give them a good education.

C. They are complaining they can’t afford to travel abroad.

D. They are complaining poor economic condition is ruining their life.

【4】How can we describe the writer?

A. Lost and disappointed. B. Passive and stressed.

C. Determined and helpful. D. Positive and grateful.

【5】The passage is developed mainly by ________.

A.facts and descriptions

B.comparison and persuasion

C.examples and explanation

D.figures and conclusion

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】Though not very rich, Ni Ping, a well-known hostess, contributed more than three million Yuan to charity (慈善),which __________ other artists in China and inspired more people to help the poor.

A. gave an example of B. laid the foundation of

C. set an example to D. threw light on

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】阅读下面短文,根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填入一个适当的英语单词,并将该词完整地写在下方相对应的横线上。所填单词要求意义准确,拼写正确。

Working at the whaling station, I had w 【1】 catching huge whales many times with the help of the killer whale. On the afternoon I arrived at the station, as I was sorting out my 2 (住所), I heard a loud noise coming from the bay. It was Old Tom, the killer 3 was telling us that there was about to be a whale hunt.

Having become 4 (意识到) of what was happening, we jumped into the boat without 5 (一刻不停的) and headed 6 into the bay. As we d 7 nearer, I could see a whale 8 attacked by a pack of about six killers. Because of being badly wounded, the whale soon died and its body was 9 by the killers down into the d 【10 of the sea very soon.

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】One day, when I was a freshman in high school, I saw Kyle from my class walking home from school. It looked like he was carrying all of his books.

As I was walking, I saw a bunch of kids running towards him knocking all his books out of his arms so he landed in the dirt. I saw terrible sadness in his eyes.

Handing him his books, I said, "Those guys are fools. They really should get punished." He smiled at me gratefully. It was the smile that showed real gratitude. I helped him pick up his books, and asked him where he lived. We talked all the way home, and I carried his books. I invited him to play football on Saturday with me. Over the next four years, Kyle and I became best friends.

Graduation day, I saw Kyle. He was one of those guys that really found himself during high school. I could see that he was nervous about his speech. As he started his speech, he cleared his throat, and began. "Graduation is a time to thank those who helped you make it through those tough years: your parents, your teachers, maybe a coach, but mostly your friends. I am here to tell you that being a friend to someone is the best gift you can give them."

I just looked at my friend with disbelief as he told the story of the first day we met. He had planned to kill himself over the weekend. He gave me a little smile. "Thankfully, I was saved. My friend saved me from doing the unspeakable." I heard the gasp(倒吸气) go through the crowd as this handsome, popular boy told us all about his weakest moment. I saw his Mom and Dad looking at me and smiling that same grateful smile. Not until that moment did I realize its depth.

Never underestimate the power of your actions. With one small gesture you can change a persons life. God puts us all in each others lives to impact one another in some way. Each day is a gift from God! Dont forget to say, Thank you!

【1When I first met Kyle, he ______.

A. ran with a bunch of kids

B. felt very sorrowful

C. got hurt landing in the dirt

D. was tired from walking

【2】The reason why Kyle and I become friends is all the following EXCEPT that _____.

A. I helped him pick up his book

B. I talked with him all the way home

C. I helped him punish the kids chasing him

D. I asked him to play football on weekend

【3】In Paragraph4, the underline word them refers to _____.

A. your coaches B. your teachers

C. your parents D. your friends

【4】What can we infer from Paragraph5?

A. My kindness helped Kyle through his hard time.

B. It was Kyles weakest time after he met me.

C. Kyle experienced his hardest time when speaking.

D. Kyles parents managed to stop him from killing himself.

【5】What is the purpose of the passage?

A. To tell us a story about friendship.

B. To show us the impact of kindness.

C. To advise us to be grateful for God.

D. To help us get through the hard time.

查看答案和解析>>

科目:高中英语 来源: 题型:

【题目】-- I’m sorry I’m late. I got held up in the traffic on my way here.

-- ________ .

A. Don’t be late next time

B. You should be blamed

C. It doesn’t matter, I’m also late

D. Never mind. Come and sit down

查看答案和解析>>

同步练习册答案