Many people travel to different places in the world by air. Usually it takes a long time, perhaps half a day, for passengers to stay in the plan. So airlines（航空公司）offer passengers food. But it is common that they feel bad about food taste. Do you agree?

To solve this problem, airlines try hard to improve their food. They would like to do so because they don’t want to lose customers.

However, according to scientific research, part of the reason why plane food tastes bad is that at high altitude（海拔）we can not taste things as well as we do on the ground. Also scientists have found that our noses become very dry even before a plane takes off. As the plane moves up, the change in air pressure（氣壓）reduces one third of the sensibility（感覺(jué)）of our taste buds（味蕾）. So our taste buds become senseless. The sad face, however, is that our noses don’t know it.

All of these help explain why food on the plane tastes so bad. They also help explain why airlines choose to offer passengers salty and spicy（辛辣的）food. Without doing so, the food would be tasteless.

Now there are many researches on this. According to one of them, some volunteers are asked to lie with their feet higher than their heads for weeks. And scientists write down their feelings about food taste.

Though scientists try their best, it is not as easy as they thought. Because they can’t deal with the special environment successfully, such as the change in air pressure, making food taste good is still hard for them.

1.In Paragraph 2, “this problem” means ______.

A.passengers stay long in the plane

B.food on the plane tastes bad

C.passengers have no food to eat

D.food on the plane is expensive

2.What do airlines do to solve this problem?

A.Get more customers. B.Offer more food.

C.Improve their food. D.Reduce the ticket price.

3.As the plane moves up, the change in air pressure reduces of the sensibility of our taste buds.

A.half B.one third

C.one fourth D.one fifth

4.Why do scientists feel it hard to made food on the plane taste good?

A.The volunteers don’t know about food taste.

B.The volunteers don’t understand them.

C.They can’t find enough volunteers.

D.They can’t deal with the special environment successfully.

5.What is the best title of the passage?

A.Taste of Airplane Food

B.Airplane Travel

C.Scientific Research on Noses

D.The Change in Air Pressure

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：陜西省2019-2020學(xué)年七年級(jí)上學(xué)期期中英語(yǔ)試卷 題型：單詞填空

附加題

根據(jù)首字母提示，完成短文

I am a middle school student. I am b1.every day. because I have to go to school from M2.to Friday. And I do homework every evening. I have a “brother”，but he is not my mother’s s3.. I am the only c4.in my family.

My “brother” is one y5.old. He is black and white. He is very lovely and cute. He h6.homework, too. His homework i7.running after me. He loves d8.his homework very much. There are t9.letters in his name. The first letter is in “red”, but not in “white”, The s10.letter is in “good”,but not in“grade”.The third letter is in “go”, but not in “phone”. Do you know what my “brother” is now? Do you want to have a “brother”too?

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2019年江蘇省南京市玄武區(qū)中考一模英語(yǔ)試卷 題型：多任務(wù)混合問(wèn)題

A）閱讀下面短文，根據(jù)所讀內(nèi)容在文章后的空格里填入一個(gè)最恰當(dāng)?shù)膯卧~，并將答案填寫(xiě)在答題卡相應(yīng)位置上。

注意：每個(gè)空格只填一個(gè)單詞。

The concept of homeschooling is not a new one. Homeschooling means educating children at home instead of sending them to public or private schools. Nowadays, homeschooling has become popular in the USA for a lot of reasons. One of them is poor quality of education in public schools and it’s also because of the high cost in private schools. Some parents believe that because they know their child’s strengths and weaknesses, they can teach him or her better. Some parents prefer homeschooling so as to prevent their children from getting into bad company. There is another group of people who choose to educate their children at home because they want them to learn their religious beliefs. They also think that homeschooling would help in development of strong family bonds (家庭紐帶).

However, there are some negative influences of homeschooling on students as well as parents.

Homeschooling is a full-time job and not fit for parents who have their own careers. It takes a lot of time for parents’ side to make homeschooling a success. Other family members’ responsibilities may also be affected. They may give their full attention to the needs of their children. Besides, a parent may have high educational qualifications, but that does not make him or her a good teacher. Teaching is an art, which requires the ability to understand the needs of the children. It may be difficult for the parents to explain the concepts to their children.

In today’s world, competition is seen in every field, and school prepares children to face these competitions. However, homeschooling does not give the children a chance to compare with other kids. They will also not be aware of where they stand in educational position among their classmates. This may affect their lives. Education is not the only thing that the children need to become successful human beings. It is necessary that they learn to communicate in the society, and public school provides them with such an environment, where they meet many people. Schools also provide children with a chance to take part in different activities to improve their overall development.

It is true that it has many advantages, but one must get to know that school teaches children skills to survive.

Homeschooling in the USA

Definition

Educating children at home instead of in 1. schools or private ones.

2. for the popularity of homeschooling

? The quality of education in public schools is poor and private schools are quite 3..

? Children are 4. better at home because parents know their strengths and weaknesses.

? Children can be kept away from bad company if they study at home.

? Homeschooling is 5. in learning the religious beliefs of the family and strengthening family bonds.

Negative 6. of homeschooling

For parents:

? It’s difficult for them to 7. in homeschooling because they have their own careers.

? They may not be good 8. although they may have high educational qualifications.

For children:

? They won’t get chances to compare with others if they don’t go to schools.

? It’s impossible for them to learn proper ways of 9. in the society.

? They are not able to take part in different activities to 10. their overall development.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2019年江蘇省南京市玄武區(qū)中考一模英語(yǔ)試卷 題型：單選題

With homework, middle school students can take part in more after-school activities.

A.few B.little C.fewer D.less

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：內(nèi)蒙古呼和浩特市2018-2019學(xué)年九年級(jí)上學(xué)期9月月考英語(yǔ)試卷 題型：單詞填空

首字母短文填空

Halloween is a strange h1.. It’s s2. several centuries ago in Europe . It began as “Hallow Evening” which means “holy night”. At t3. time November 1st was called “All Saints' Day” (萬(wàn)圣日) and people honored all the saints who did not have their own special day. People believed that all the spirits of dead people were active on the night of October 3Ist. So people would play all sorts of tricks on e4. other.

Black is one of the t5.Halloween colors, probably because Halloween festivals and traditions took place at n6.. Pumpkins are a symbol of Halloween, so orange has become the other traditional Halloween color. Making lanterns out of pumpkins is a Halloween custom.

Halloween is great f7. for children. They d8. up as ghosts(鬼), witches(女巫). Small children go ‘Trick-or-Treating’. They wear costumes, knock on doors, and s9., ‘Trick or Treat!’ People almost always choose to give them candy as a treat, i10. of choosing to receive a trick from the children. Adults sometimes ‘trick or treat’ their friends, too. Usually the ‘treat’ is a glass of wine or some small gifts.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：內(nèi)蒙古呼和浩特市2018-2019學(xué)年九年級(jí)上學(xué)期9月月考英語(yǔ)試卷 題型：單選題

It's quite warm in the room. Why not your coat?

A. pick up B. take off C. put off D. give away

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：內(nèi)蒙古呼和浩特市2018-2019學(xué)年九年級(jí)上學(xué)期9月月考英語(yǔ)試卷 題型：單選題

I’ll go to visit my aunt in England _______ the summer holiday starts.

A.while B.since C.until D.as soon as

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：河北省石家莊市2017-2018學(xué)年九年級(jí)下學(xué)期3月月考英語(yǔ)試卷 題型：單選題

It often takes me two hours _______ playing the violin.

A.practice B.to practice C.practicing D.practices

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：內(nèi)蒙古呼和浩特市2018-2019學(xué)年八年級(jí)上學(xué)期9月月考英語(yǔ)試卷 題型：單選題

Our teacher didn't come to the classroom as________.What happened?

A.usually B.common C.never D.usual

查看答案和解析>>

同步練習(xí)冊(cè)答案