The most energetic and important festivals ar...

The most energetic and important festivals are _____that look forward to the end of winter and to the coming of spring.l

A．ones             B．those             C．that              D． It

高二英语单项填空中等难度题查看答案及解析

Hummingbirds (蜂鸟) are one of nature’s most energetic fliers and the only birds to hover in the air by relying on their strength alone.

Now scientists have found that it is the ratio (比值) of the bird’s wing length to its width that makes them so efficient. The discovery is helping experts compete with 42 million years of natural selection to build helicopters that are increasingly efficient.

David Lentink, an assistant professor at Stanford University in California, tested wings from 12 different species of hummingbirds, which he sourced from museums. He placed them on a machine used to test the aerodynamics (气力学) of the helicopter blades (桨叶). Professor Lentink’s team used the same machine to test the blades from an advanced micro-helicopter used by the UK’s army. They found that the micro-helicopter’s blades are as efficient at hovering as the average hummingbirds.

But while the micro-helicopter’s blades kept pace with the average hummingbird wings, they could not keep up with the most efficient hummingbird’s wing. The wings of Anna’s hummingbird were found to be about 27 percent more efficient than the man-made micro- helicopter’s blades.

While Professor Lentink wasn’t surprised at nature’s superiority, he said that helicopter blades have come a long way. “The technology is at the level of an average hummingbird,” he said. “A helicopter is really the most efficient hovering device that we can build. The best hummingbirds are still better, but I think it’s amazing that we’re getting closer. It’s not easy to match their performance, but if we build better wings with better shapes, we might match hummingbirds.”

Professor Lentink said that we don’t know how hummingbirds maintain their flight in a strong wind, how they navigate (确定方向) through branches, or how they change direction so quickly. He thinks that great steps could be made by studying wing aspect ratios—the ratio of wing length to wing width. Understanding these abilities and characteristics could be a benefit for robotics and will be the focus of future experiments.

1.What did the scientists find about hummingbirds?

A. Their wings are long and wide.

B. They can hover in the air for a long time.

C. The ratio of their wing length to wing width is very important.

D. They are the most energetic flier in nature.

2.Which is the right order of Professor Lentink’s research?

① Tested wings from different species of hummingbirds.

② Got resources from museums.

③ Analyzed the results and drew a conclusion.

④ Tested the blades from a micro-helicopter.

A. ①②③④　　 B. ②①③④　　 C. ②④①③　　 D. ②①④③

3.According to Professor Lentink, what will be the focus of future experiments?

A. To know how hummingbirds can fly in a strong wind.

B. To know how hummingbirds change direction so quickly.

C. To develop a new kind of helicopter.

D. To study the secrets of hummingbirds.

高二英语阅读理解困难题查看答案及解析

Qixi is an important festival that celebrates love and 1.(devote), which falls on the seventh day of the seventh lunar month of the Chinese calendar. The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. 2. actually these ancient traditions and customs 3.(die) out nowadays.

Many a Chinese, particularly youngsters, 4.(seem) to know more about St Valentine’s Day on February 14th, 5. people celebrate it with bouquets of roses, chocolates and romantic candlelight dinners. 6.(refer) to as the “Chinese Valentine’s Day,” Qixi, as a traditional Chinese festival, is more similar 7. a western festival since fewer people than ever will gaze at the heavens to pick out the two stars shining bright on either side of the Milky Way. There are reminders dotted about, in 8. form of big ads saying “Sales on Chinese Valentine’s Day!” in shops, hotels and restaurants. However, 9.(differ) from traditional practices, few young women will mark the festival with their boyfriends, or take part in traditional activities to celebrate 10..

高二英语语法填空中等难度题查看答案及解析

Friends are gifts and treasures. When asked to point out one or two things that are most important to themselves, many put friends ahead of homes, jobs, clothes and cars.

A true friendship carries a long history of experience that determines who we are and keeps us connected. It is a treasure we should protect. Unfortunately, the better friends you are, the more probably you’ll have disagreements. And the result can be what you don’t want — an end to the relationship.

The good news is that most troubled friendships can be mended. First, don’t’ let your pride get in your way. Most of us can forgive each other when differences are brought out in the open. Second, apologize when you’re wrong — even if you’ve been wronged. Over the course of a friendship, even the best people make mistakes. Sometimes, it may be best if the wronged person takes the lead and apologizes. When you apologize, give your friend a chance to admit that he has been wrong. Third, see things from your friend’s point of view. And finally, accept that friendships change as our needs and lifestyle change. Making friends can sometimes seem easy. The hard part is keeping the connections strong during the natural ups and downs that have an effect on all relationships. My suggestion: Consider friendship an honor and a gift, and worth the effort to treasure and nurture.

1.The “wronged person” underlined in the text refers to a person _______.

A.who has been mistaken for another

B.who has been blamed unfairly

C.who has treated friends badly

D.who has admitted his mistakes

2.According to the text, a friendship can last long only if _______.

A.we have much in common

B.we know our friends’ mistakes

C.we treat our disagreements wisely

D.we have known one another for long

3.What should we do if we follow the author’s second suggestion?

A.Stick to our own points of view B.Avoid making mistakes

C.Make an apology first D.Change our lifestyles

4.What would be the best title for the text?

A.Easy Ways to Make Friends

B.Ups and Downs in Friendship

C.How to Mend a Troubled Friendship

D.How to Take the Lead in Making Friends

高二英语阅读理解中等难度题查看答案及解析

“You are too selfish. It’s high time you 　　 that you are not the most important person in the world.” Peter said to his boss angrily.

A. realized　 B. realize　 C. will realize　 D. have realized

高二英语单项填空中等难度题查看答案及解析

“You are too selfish. It’s high time you 　　　 that you are not the most important person in the world.” Peter said to his boss angrily.

A. realized　　　　　　　　 B. realize　　　　　　 C. will realize　　　 D. have realized]

高二英语单项填空中等难度题查看答案及解析

People are overweight for many reasons, the most important one of which is that they eat the wrong foods, get the wrong types ofcalories per meal, and they also eat meals at the wrong time each day. Food is more powerful than any weight loss pill, because the food that you eat can either make you thin or fat. This is true because your body is like an engine, and it only needs certain foods at certainintervals(间隔) each day.

Low-calorie Diets Do Not Work

The reason people cannot lose weight by starving themselves is that their metabolism(新陈代谢) will detect any major drop in calories and it will then adjust itself by burning fewer calories each day. That is the reason why you can eat 1,000 calories per day and not lose any weight, while your friends can eat 2,500 calories per day and not gain any weight.

Low-fat Diets Do Not Work

Many people in today’s society are buying mostly low-fat or non-fat food at the grocery store. Everybody knows how much fat is inside the food they buy. However, people are getting fatter than ever before by doing this. They are not losing weight by changing to this low-fat lifestyle.

Losing weight has nothing to do with these things. One of the most important things you can do to control your weight is to eat the proper foods, such as fruit and vegetables, eat them at the right time, and exercise every day. If people make this a habit, they will lose weight.

1.What is the main reason why people are overweight?

A. They burn many calories every day.

B. They eat the wrong foods at the wrong time.

C. They eat food with lots of calories.

D. They don’t take weight loss pills.

2.The article is written in order to________.

A. tell readers not to buy low-fat or non-fat food.

B.tell readers about an important scientific discovery.

C .tell readers how to lose weight.

D. call on people to lose weight and stay healthy.

3.To realize the aim of your weight loss plan, you should_________.

a. do exercise every day

b. eat meals at the right time

c. eat fruits and vegetables

d. eat low-fat or sweet food

e. eat the proper foods at each meal

A. a, b, c, e　　　　　 B. a, b, d, e

C. a, c, d, e　　　　 D.a, b, c, d

高二英语阅读理解中等难度题查看答案及解析

People are overweight for many reasons, the most important one of which is that they eat the wrong foods, get the wrong types of calories per meal, and they also eat meals at the wrong time each day. Food is more powerful than any weight loss pill, because the food that you eat can either make you thin or fat. This is true because your body is like an engine, and it only needs certain foods at certain intervals(间隔)each day. Low-calorie Diets Do Not Work

The reason people cannot lose weight by starving themselves is that their metabolism(新陈代谢)will detect any major drop in calories and it will then adjust(调整)itself by burning fewer calories each day. That is the reason why you can eat 1,000 calories per day and not lose any weight, while your friends can eat 2,500 calories per day and not gain any weight.

Low-fat Diets Do Not Work

Many people in today’s society are buying mostly low- fat or non-fat food at the grocery store. Everybody knows how much fat is inside the food they buy. However, people are getting fatter than ever before by doing this. They are not losing weight by changing to this low fat lifestyle.

Losing weight has nothing to do with these things. One of the most important things you can do to control your weight is to eat the proper foods, such as fruit and vegetables, eat them at the right time, and exercise every day. If people make this a habit, they will lose weight.

1.What is the main reason why people are overweight?

A．They eat the wrong foods at the wrong time.   B．They eat food with lots of calories.   C．They don’t take any weight loss pills.                     D．They burn many calories every day.

2.The article is written in order to _______.

A．tell readers not to buy low-fat or non-fat food  B．tell readers how to lose weight C．tell readers about an important scientific discovery            D．call on people to lose weight and stay healthy

3.To realize the aim of your weight loss plan, you should ________.

a. do exercise every day

b. eat meals at the right time

c. eat fruits and vegetables

d. eat low-fat or sweet food

e. eat the proper foods at each meal

A．a, b, c, d           B．a, b, d, e           C．a, c, d, e           D．a, b, c, e

高二英语阅读理解中等难度题查看答案及解析

Many teenagers feel that the most important people in their lives are their friends．They believe that their family members, especially their parents．Don’t know them as well as their friends do．In large families．it is often for brothers and sisters to fight with each other and then they can only go to their friends for advice．

It is very important for teenagers to have one good friend or many friends．Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone．This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.

However, parents often try to choose their children’s friends for them．Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one．Have you ever thought of the following questions?

Who choose your friends?

Do you choose your friends or your friends choose you?

Have you got good friend your parents don’t like?

1.Many teenagers think their ________ know them better than their parents do．

2.When teenagers stay alone，the usual way of communication is to________,

3.The passage suggests（暗示）that________．

高二英语阅读理解中等难度题查看答案及解析

Many teenagers feel that the most important people in their lives are their friends. They believe that their family members, especially their parents, don’t know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only go to their friends for advice. It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.

However, parents often try to choose friends for their children. Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one. Have you ever thought of the following questions?

Who chooses your friends?

Do you choose your friends or your friends choose you?

Have you got a good friend your parents don’t like?

1.Many teenagers think their _________ know them better than their parents do.

A.friends   B.teachers    C.brothers and sisters     D.classmates

2.When teenagers stay alone, the usual way of communication is to _________.

A.go to their friends                   B.talk with their parents

C.have a discussion with their family

D.talk with their friends on the phone

3.Which of the following sentences is TRUE?

A.Teenagers can only go to their friends for help.

B.Parents should like everything their children enjoy.

C.In all families, children can choose everything they like.

D.Parents should try their best to understand their children better.

4.The main idea of this passage is that _________.

A.Teenagers need good friends

B.Friends can give good advice

C.Parents often choose friends for their children

D.Good friends can communicate with each other

高二英语阅读理解中等难度题查看答案及解析