Humans and many other mammals have unusually ...

Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity (湿度).

In very cold climates, there is a constant danger of developing hypothermia, which is a life-threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0°C. However, differences in persons and even the time of day can cause it to be as much as 6°C higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4°C. Below 29.4°C, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9-15.6°C. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7°C.

In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life-threatening hyperthermia typically starts in humans when their temperatures rise to 40.6-41.7°C. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.

1.What keeps our body temperature stable?

A. Culture and technologies. B. The stable earth temperature.

C. Our strong determination. D. Some kind of in-body system.

2.What is a Swedish woman mentioned for in the text?

A. Proving the strength of life.

B. Arguing against some conclusion.

C. Showing the limit on humans’ body temperature.

D. Introducing an exceptional case about our body temperature.

3.Which of the following may cause hyperthermia?

A. Extreme climates. B. Very cold climates.

C. Controllable infections. D. Temperatures below 29.4°C.

4.What can be a suitable title for the text?

A. Humans’ Temperature Regulating System B. Changes of Body Temperatures

C. Humans’ Temperature D. A Ice Trap Survivor

高二英语阅读理解中等难度题查看答案及解析

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Humans and animals have always lived together. For example, many people have dogs in _1.___ homes. Dogs __2.___ （be）very affectionate animals. They are also very sensitive to the feelings of the people with ___3.____ they live, and it seems quite natural ____4.______ (have) them in our houses. __5.____ all the many different types of dogs come from one species of animal, the grey wolf. These wild animals came into villages 12,000 years ago, ____6._____ (look) for food. People found that wolves could help in the __7.____ (day) struggle for survival by guarding their homes and ___8.____ (hunt) wildlife to kill and eat. In some very cold parts of Northern Canada, the skin of very old dogs is still used _____9._____ warm clothes. Dogs are useful and many people love them—that is why they ____10.___ (call) “ man’s best friend”.

高二英语语法填空中等难度题查看答案及解析

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Humans and animals have always lived together. For example, many people have dogs in _1.___ homes. Dogs __2.___ （be）very affectionate animals. They are also very sensitive to the feelings of the people with ___3.____ they live, and it seems quite natural ____4.______ (have) them in our houses. __5.____ all the many different types of dogs come from one species of animal, the grey wolf. These wild animals came into villages 12,000 years ago, ____6._____ (look) for food. People found that wolves could help in the __7.____ (day) struggle for survival by guarding their homes and ___8.____ (hunt) wildlife to kill and eat. In some very cold parts of Northern Canada, the skin of very old dogs is still used _____9._____ warm clothes. Dogs are useful and many people love them—that is why they ____10.___ (call) “ man’s best friend”.

高二英语语法填空中等难度题查看答案及解析

Bats are the only mammals(哺乳动物) which can fly properly. Other flying mammals have wings of thin skin which cover their sides between their front and back legs. They can only fly from tree to tree, but they cannot change direction when they want to.

All bats fly at night and most of them hunt for flying insects(昆虫), such as bees. The common bat finds its food by making a constant noise that the human ear cannot hear. The bat listens for echoes(回声) of the noise as it bounces(反射) off the insects showing the bat their position.

The Fruit bat feeds on many different kinds of fruit. It does not use echoes but instead has very large, special eyes to see even in low light. The largest Fruit bat has a wing length of 0.75 meters. The Vampire bat drinks the blood of large mammals, and a few bats catch fish, birds and even other bats.

1. Some flying mammals are not real flyers because _____.

A. they do not have wings                     B. their wings are too thin

C. they have skin between their legs             D. they cannot turn around in the air

2. When common bats hunt for food they _____.

A. use echoes to kill the insects           B. make a noise to draw insects to them

C. produce a sound and listen to the echoes     D. listen noise made by the insects

3. Unlike other bats, the Fruit bat _____.

A. can see very well                   B. eats fruit and fish

C. has very long wings                    D. has excellent hearings

4.The word "it" in the second paragraph refers to _____.

A. the bat           B. the echo      C. the noise       D. the insect

高二英语阅读理解中等难度题查看答案及解析

People visit other countries for many reasons．Some travel on business；others travel to visit interesting places that are only found in other countries，such as the Taj Mahal (泰姬陵)in India．

Wherever you go, and for whatever reason，it is important to be safe．While the majority of people you will meet when traveling are sure to be friendly and welcoming, there are dangers—theft being the most common．Just as in your home country, do not expect everyone you meet to be friendly and helpful．It is important to prepare for your trip in advance, and to take precautions (预防措施)while you are traveling．

As you prepare for your trip, make sure you have the right paperwork．You don't want to get to your destination only to find you have the wrong visa，or worse，that your passport is about to expire．Also, make sure you travel with proper medical insurance, so that if you are sick during your travels，you will be able to get treatment．If you want to drive while you are abroad，make sure you have an international driver's license．

Buy a guidebook and read about the local customs of the country you are going to．Also, try to learn a few basic words and phrases。

When you get to your destination, use official transport．Always go to bus and taxi stands; don't accept rides from strangers who offer you a lift．If there is no meter(计时器) in the taxi, agree on a price before you get in．If you prefer to stay in cheap hotels while traveling，make sure you can lock the door of your room from the inside．If you are traveling with valuables such as jewelry, or a lot of cash, you should ask about a safe for storing them in．Finally, remember to smile．Smiling is the friendliest and most sincere form of communication, and is sure to be understood in any part of the world!

1.Who is the passage intended for?

A. Students who study abroad

B. High school English teachers

C. Exchange students

D. Tourists who plan to travel abroad

2.Which of the following will expire?

A. Hotel　　　　　　 B. Luggage

C. ID card　　　　　 D. Name

3.Which of the following details about the passage is true?

A. People mainly travel to other countries for business reasons.

B. It is important to be prepared , as well as cautious, when you travel.

C. You should carry your insurance with you so that you can rent a car.

D. You should store your valuables in the front desk of a hotel.

4.Choose the best title for the passage.

A. Some precautions when traveling abroad.

B. The two main reasons for people traveling.

C. The official documents a traveler needs.

D. Advice on using local transportation.

5.Where can you read this kind of passage?

A. Economy　　　　　 B. Education

C. Sports　　　　　　 D. Tourism

高二英语阅读理解中等难度题查看答案及解析

The group of the aged are close companions, and many of ______ have known each other for decades.

高二英语单项填空简单题查看答案及解析

Much of European train is about efficiency and comfort --- leaving and arriving on time and having a comfortable seat. But the following European trains don’t necessarily offer the fastest journeys --- just the most memorable.

1.Travelling from Montreux to Broc on the Chocolate Train, you ____________.

A. will spend about five hours

B. have to go in winter and spring

C. will see a famous chocolate factory

D. can have lunch on the train

2.Which of the following websites offers more information about Francisco de Goya?

A. www.trans-siberia.com                                                B. www.visitflam.com

C. www.raileurope.com                                                    D. www.elipsos.com

3.Which of the following trains can help you learn about Russian culture?

A. Trans-Siberian Railway.                                       B. The Chocolate Train.

C. Francisco de Goya.                                                       D. The Bernina Express.

4.The passage is most probably taken from a _____________.

A. news report                                                                   B. book review

C. travel magazine                                                             D. geography textbook

高二英语阅读理解中等难度题查看答案及解析

Most nations have at least one type of food that people from other countries think is unusual or unacceptable to eat. In France, people eat horse meat and frog legs. In South Korea and parts of China, restaurants serve dog meat. And in Australia, it’s common to cook kangaroo meat on the barbecue and use emu eggs to make pancakes.

The kangaroo and emu are native to Australia. Both animals are important to the national image of Australia and appear on the Australian coat of arms. They’re also central figures in the history of the native Australians. However, they still hunt these animals for their meat, fur and fat.

Today, Australian people continue to eat these animals. One of the reasons people eat kangaroo meat is that it’s high in protein and low in fat, so eating kangaroo is a good option for anyone on a diet. It’s also cheaper to eat kangaroo meat than other red meats. Because of this, a lot of university students choose to buy kangaroo meat. BBC News also reported that Australian scientists believe that eating kangaroo meat is good for the environment— kangaroos have different digestive systems than cows and sheep, meaning they produce less methane, the second biggest contributor to global warming.

While emu meat is high in iron and vitamin C, most people don’t think it tastes good. For this reason, they prefer emu eggs. One egg is large enough to make seven omelettes (煎蛋). And while ifs illegal to collect emu eggs from the wild, they can be bought from emu farms. Rather than cracking the beautiful dark shell, it’s better to dry it by putting a small hole at each end and blowing. Afterwards, you can even carve a design into the eggshell.

1.What is the purpose of the first paragraph?

A. To introduce the topic of the article.

B. To tell us the cultural differences of eating.

C. To suggest that different countries have different habits.

D. To indicate that people try to adapt to other countries’ diets.

2.According to the article, the kangaroo ________.

A. dies out due to hunting by Aboriginal tribes.

B. is full of large amounts of iron and vitamins in its meat.

C. is not considered healthy and environmentally friendly to eat.

D. is considered important in the history of the native Australians.

3.What is the main idea of paragraph 3?

A. Report the contributor to global warming.

B. Analyze the reasons why people eat kangaroo meat.

C. Tell people the fact that people like eating kangaroo.

D. Explain the benefits of eating kangaroo meat on the environment.

4.Which of the following statements is TRUE about emu eggs?

A. Emu eggs are all very small.

B. Emu eggs taste delicious and nutritious.

C. Emu egg shells can be used to create art.

D. It’s common for Australians to collect emu eggs from the wild.

高二英语阅读理解中等难度题查看答案及解析

Whales live in the ocean, but they are not fish. They are warm-blooded mammals and must have air to breathe. The babies are born alive and drink milk from the mother's body. It took millions of years for the whale to develop as it is today.

Every spring groups of whales swim hundreds of kilometers to warm places to bear their young. Each group goes to the same place every year. The mothers take very good care of their babies. The fully grown whales are very gentle and playful with each other, and with humans. They “talk” to each other with a high noise that  sounds beautiful. This“talking” can be heard for more than 300 kilometers in open waters.

Yet humans kill over a hundred whales a day. They kill them to make whale oils and a lot of other things. Killing them is a modern business with modern machines and even harpoons( 鱼叉炮) that explode( 爆炸) inside the whales. A whale dies very slowly and in great pain. Some ships kill every whale they can find, even the mothers and babies. Then there are no young whales to grow up or to bear more young.

1.A commonly mistaken belief is that ____.

2.In the passage “mammals” refer to ____.

3.Every spring each group of whales ____.

4.When whales talk, it sounds like ____.

5.Every year humans kill ____ all over the world.

高二英语阅读理解中等难度题查看答案及解析

Dodder is an unusual and unwanted plant that attacks other plants. Except for its flowers, the plant looks like spaghetti, a kind of noodles in the shape of long thin pieces that look like string when they are cooked. Its almost leafless, thread-like stems（茎）hang down on top of other plants that dodder needs to stay alive. Dodder does not produce its own food. Instead, it steals food from other plants. It feeds by sucking juices from the plant which is wrapped around, often making its host very weak or even killing it.

Dodder can find other plants by their smell. When a young dodder plant starts growing, it follows the smell of plants it prefers, like tomato plants, potato plants, or other farm crops. Unlike most plants that usually grow in the direction of light or warmth, a dodder plant will grow in the direction of, for example, tomato smell-if a tomato happens to be growing nearby.

However, a young dodder plant must find a host plant quickly. It no longer needs its root once it is attached to the host and wrapped around it. If it cannot catch a smell of a potential host within a few days, it will dry up and disappear-even if there is plenty of water around. Once it finds a host, the young dodder plant will attach itself to it and start growing faster. At that point the dodder plant will drop its root.

Dodder is thus a difficult weed to manage and a real headache for farmers. When it does get out of hand, dodder can greatly reduce a farmer’s harvest or even destroy crops completely. Before sowing their produce, especially farmers in warm parts of the world often check to make sure no unwanted dodder seeds have mixed with their crop seeds. This is a good way to stop dodder plants from making their way to a crop field secretly.

1.Why does the author mention spaghetti in the first paragraph?

A. To analyze the content of some food.

B. To describe tie shape of dodder plants.

C. To explain where the dodder plants come from.

D. To argue that dodder plants can be used.

2.What will happen if a dodder plant starts growing where there are no other plants around?

A. It will die sooner or later.

B. It will grow deep roots.

C. It will attract other plants.

D. It will cover the entire area of soil.

3.What can be inferred from the passage?

A. Dodder does not produce its own food.

B. Dodder can affect farmers’ income.

C. Dodder can only survive in the shade.

D. Dodder only grows in the warm areas.

4.What is the main topic of the passage?

A. A new variety of farm crops.

B. Plants that are harmful to humans.

C. The special abilities of a dangerous plant.

D. Recent improvements in farming methods.

高二英语阅读理解中等难度题查看答案及解析