At noon, I put too much air into the bicycle ...

At noon, I put too much air into the bicycle tyre and it 　　. As a result, I had to go to school on foot this afternoon.

A. injured　　 B. buried

C. burst　　 D. destroyed

高一英语单项填空中等难度题查看答案及解析

They are putting too much carbon dioxide into the atmosphere, ______ prevents heat from escaping from the earth into space.

高一英语单项填空困难题查看答案及解析

They are putting too much carbon dioxide into the atmosphere, which p_____ heat　 f____ escaping from the earth into space.

高一英语完成句子中等难度题查看答案及解析

He put on a smile and said it didn’t matter，________，in fact，he cared too much about what she said.

A．When            B．As               C．While            D．Once

高一英语单项填空中等难度题查看答案及解析

CPR is cardiopulmonary resuscitation (心肺复苏). It forces air into the lungs and pumps(用泵抽) blood and oxygen to the brain in order to increase the chances that a person whose heart stops will survive. It increases the chances that he or she will suffer little or no brain damage.

The American Heart Association suggests two ways to perform CPR. One combines the use of hands to pump the victim’s chest with rescue breathing. The other method is called “Hands-Only CPR”, which is for people who are unwilling or unable to perform rescue breathing. Some people fear infection(感染). Others say they are afraid of making the patient worse.

But the American Heart Association strongly asks people in contact with a victim(受害者) to take action and tells how to take it. It says you can recognize a person needing CPR. He or she is unconscious(无意识) -- unable to communicate or react to surroundings or speech. His or her skin has lost color. The person is not breathing. If such conditions describe the situation, chances are the heart has stopped beating.

You should act by calling for help, or sending someone else. Even if you cannot do mouth-to-mouth rescue breathing, you can perform Hands-Only CPR. You can do chest compressions(压迫) that help to keep blood flowing to the brain and the heart. To perform the compressions, place one hand over the other and press firmly on the center of the victim’s chest. Push down about five centimeters. Aim for one hundred compressions each minute.

Doctor Sayre suggests that medical workers do both the breathing method and chest compressions as usual. He says some victims, including babies, need the mouth-to-mouth breathing with the compressions. Still, the doctor says it is better to do just chest compressions than to do nothing.

高一英语填空题简单题查看答案及解析

She_____writing the report after breakfast and handed it in at noon.

A. set off B. set down  C. set out D. set about

高一英语单项填空中等难度题查看答案及解析

Don’t eat too much chocolate, or you can ______ weight quickly.

高一英语单项填空简单题查看答案及解析

Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving(铺砌) a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.

Human activity is not responsible for all water shortages(缺乏). Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs .

Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live, but there’s a lot we can do to lower the number.

You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher only when it is full. Help your parents fix any leaks(滴水) in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.

1.Which of the following is most likely to lead to less groundwater?

A. Using river water.　　 B. Throwing batteries away.

C. Paving parking lots.　　 D. Throwing rubbish into lakes.

2.What can be inferred from the text?

A. All water shortages are due to human behavior.

B. It takes a lot of effort to meet our water needs.

C. There is much we can do to reduce family size.

D. The average family in America makes proper use of water.

3.The last paragraph is intended to ________________.

A. show us how to fix leaks at home

B. tell us how to run a dishwasher

C. prove what drinking glass is best for us

D. suggest what we do to save water at home

4.The text is mainly about _________________.

A. how human activity affects our water supply

B. how much we depend on water to live

C. why droughts occur more in dry climates

D. why paving roads reduces our water

高一英语阅读理解中等难度题查看答案及解析

Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving(铺砌)a road can lead to less usable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.

Human activity is not responsible for all water shortages(短缺).Drier climates are of course more likely to have droughts(干旱)than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs.

Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live, but there’s a lot we can do to lower the number.

You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher(洗碗机)only when it is full. Help your parents fix any leaks in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.

1.Which of the following is most likely to lead to less groundwater?

A. Using river water.

B. Paving parking lots.

C. Throwing batteries away.

D. Throwing rubbish into lakes.

2.What can be inferred from the text?

A. All water shortages are due to human behavior.

B. The average family in America makes proper use of water.

C. There is much we can do to reduce family size.

D. It takes a lot of effort to meet our water needs.

3.The last paragraph is intended to 　　　 .

A. show us how to fix leaks at home

B. tell us how to run a dishwasher

C. suggest what we do to save water at home

D. prove what drinking glass is best for us.

4.The text is mainly about　　 .

A. how human activity affects our water supply

B. how much we depend on water to live

C. why droughts occur more in dry climates

D. why paving roads reduces our water.

高一英语阅读理解中等难度题查看答案及解析

Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving(铺砌) a road can lead to less usable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.

Human activity is not responsible for all water shortages(短缺). Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs.

Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5tons of water a day! This shows how much we depend on water to live, but there's a lot we can do to lower the number.

You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher only when it is full. Help your parents fix any leaks (泄露、漏洞)in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.

1.Which of the following is most likely to lead to less groundwater?

A. Using river water.　　　　　　　　　　　　　　　　　　　 B. Throwing batteries away.

C. paving parking lots.　　　　　　　　　　　　　　　　　　 D. Throwing rubbish into lakes.

2.The meaning of the underlined word mans 　　　　　　 .

A. water on the ground            　　 B. water from a well(井)

C. water from the deep earth            D. water from lakes or rivers

3.What can be inferred from the text?

A. All water shortages are because of human behavior.

B. It takes a lot of efforts to meet our water needs.

C. There is much we can do to reduce family size.

D. The average family in America makes proper use of water.

4.The last paragraph is intended to 　　　　　　　 .

A. show us how to fix leaks at home　　　　　

B. tell us how to run a dishwasher

C. prove what drinking glass is best for us　　

D. suggest what we do to save water at home

5.The text is mainly about _____________.

A. why paving roads reduces our water.　　

B. how much we depend on water to live.

C. why droughts occur more in dry climates.　

D. how human activity affects our water supply.

高一英语阅读理解中等难度题查看答案及解析