I hate traveling by air______you usually have...

I hate traveling by air______you usually have to wait for hours before the plane takes off.

A. because B. though C. until D. so that

九年级英语单选题中等难度题查看答案及解析

I hate travelling by air_______ you usually have to wait for hours before the plane takes off.

A. because　　     B. though　　     C. until　　     D. Unless

九年级英语单项填空中等难度题查看答案及解析

I hate travelling by air__________ you usually have to wait for hours before the plane takes off.

A.because    B.though                 C.until                               D.unless

九年级英语单项填空中等难度题查看答案及解析

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 plane. So airlines 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( 气压 ) reduces one third of the sensibility(感觉 )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 )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 Paragraph2,“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.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.

3.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.

九年级英语阅读单选中等难度题查看答案及解析

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（气压）reduces one third of the sensibility（感觉）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

九年级英语阅读单选中等难度题查看答案及解析

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 plane for a long time. So airlines offer passengers food. But it is common that they feel bad about food taste. Some passengers complain about the food to the airline companies , and some others even refuse to eat them. 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 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 reduces one third of the sensibility of our taste buds（味蕾）. So our taste buds become senseless (没有知觉的).　 The sad fact, 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 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 1, “complain” means ________________ in Chinese.

A.接受 B.投诉 C.讨厌 D.丢弃

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.Our taste buds become senseless because of the following facts EXCEPT____________.

A.a high altitude B.the change in air pressure

C.our noses become dry D.the food goes bad in high altitude

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

A.Scientists have found a way to improve the plane food easily.

B.Airlines offer passengers salty and spicy food to save money

C.In the researches, some volunteers lie with their heads higher than their feet for weeks.

D.Though scientists try hard, they still can’t deal with the change in air pressure successfully.

5.What is the best title of the passage?

A.Taste of Airplane Food B.Airplane Food

C.Scientific Research on Food D.Our Taste Buds in High Altitude

九年级英语阅读单选中等难度题查看答案及解析

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（气压）reduces one third of the sensibility（感觉）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

九年级英语阅读理解中等难度题查看答案及解析

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 plane. 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(气压) reduces(降低) one third of the sensibility(感觉) of our taste buds ( 味 蕾 ). So our taste buds become senseless. The sad fact, 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 feeling 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(气压), 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.From Paragraph3, we know that________.

A. No one can find out the reasons

B. people can taste well anywhere and anytime

C. high altitude is part of the reason of plane food’s bad taste

D. our noses are not dry or wet on the plane all the time

3.Why do scientists feel it hard to make food on the plane taste good?

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

B. The volunteers don’t understand them at all.

C. They can’t find enough volunteers to try it.

D. They can’t solve the special environment problem.

4.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.

九年级英语阅读单选中等难度题查看答案及解析

I’d like to travel by air _________ it usually costs a lot of money.

A. so　　　　　         B. though　　         C. until　　             D. or

九年级英语单项填空简单题查看答案及解析

If you travel by air across the center of Africa or South America, you fly over forests for thousands of kilometres．These great forests are the seas of trees．They are full of thousands and thousands of different kinds of plants and animals．However, the world's forests are getting smaller all the time．We are cutting down the trees because we need wood, and we need more farmland as well．Some people say that there will not be any forests like these left in 20 to 30 years．What will happen if they disappear? If we cut down our forests, a lot of plants and animals will disappear from the world, in a lot of places the new farmland will soon look like the old deserts, for example, crops will not grow there．What's worse, it will not rain very often, and the weather will get very hot．Perhaps the climate of the world will change, which will be dangerous for everyone in the world．That is why we must take care of our forests．

1.Which of the following has the closest meaning to the underlined word "deserts" in this passage?

A. Farmland．

B. Sands．

C. Green fields．

D. Villages．

2.The passage mainly tells us about ________．

A. the importance of taking care of our forests

B. why a lot of animals disappear

C. where the forests are

D. the reasons for forming the deserts

3.Which of the following is TRUE according to the passage?

A. Only Africa and South America are the oceans of trees．

B. Different plants can't be found in the same forest．

C. Forests are usually several square kilometres large．

D. Forests are homes to different kinds of animals．

九年级英语阅读单选中等难度题查看答案及解析