I wonder why you didn’t do as ________ and it...

I wonder why you didn’t do as ________ and it’s the third time you have done this.

A. telling          B. be told             C. told to         D. tell

高二英语单项填空中等难度题查看答案及解析

I wonder why you won't do it as _____. It's the third time you have done so.

A.you told to B.be told C.tell you D.told to

高二英语单项填空困难题查看答案及解析

I wonder why he didn’t do it as ______.

A. told him      B. he told      C. telling to     D. told to

高二英语单项填空中等难度题查看答案及解析

Have you ever wondered why there are so many skin colors in the world? Do you know why people living in particular areas usually have a certain color? Biology and history are the two reasons for this.

Skin contains something called melanin, which determines a person’s skin color. The more melanin a person has, the darker his or her skin will be. The amount of and the production of melanin are controlled by genetics, but can be affected by other things, such as sunlight. If a person lives in a place with less sunlight, a person’s body will produce less melanin, making the skin lighter.

Skin color is also affected by another source ---- vitamin D. humans all need vitamin D to build bones. People can get it by eating foods such as fish and milk, or from sunlight, so sunlight absorbed by melanin cannot be used for vitamin D production. Therefore, a dark—skinned person will produce less vitamin D than a light—skinned person when they received the same amount of sunlight.

The connection between vitamin D production and skin color is clear when we look at evolution. The earliest humans lived in Africa, their dark skin produced less vitamin D because of their dark skin. As a result, their skin made less melanin, so they could get enough sunlight to produce vitamin D. their skin gradually got lighter and they lost hair. Now, people living in areas with strong sunlight like Africa, have darker skin, while people living in other areas have lighter skin. The exception to this is the Inuit, who live in a place with little sunlight, but have dark skin because they eat a lot of fish and have enough vitamin D.

Evolution has given us a rainbow of skin colors. Humans have always had melanin to determine our skin color. What has changed through history is the environment where we have lived. This has in turn changed our melanin production, and eventually, skin color.

高二英语其他题中等难度题查看答案及解析

Have you ever wondered why there are so many skin colors in the world? Do you know why people living in particular areas usually have a certain color? Biology and history are the two reasons for this.

Skin contains something called melanin, which determines a person’s skin color. The more melanin a person has, the darker his or her skin will be. The amount of and the production of melanin are controlled by genetics, but can be affected by other things, such as sunlight. If a person lives in a place with less sunlight, a person’s body will produce less melanin, making the skin lighter.

Skin color is also affected by another source ---- vitamin D. humans all need vitamin D to build bones. People can get it by eating foods such as fish and milk, or from sunlight, so sunlight absorbed by melanin cannot be used for vitamin D production. Therefore, a dark—skinned person will produce less vitamin D than a light—skinned person when they received the same amount of sunlight.

The connection between vitamin D production and skin color is clear when we look at evolution. The earliest humans lived in Africa, their dark skin produced less vitamin D because of their dark skin. As a result, their skin made less melanin, so they could get enough sunlight to produce vitamin D. their skin gradually got lighter and they lost hair. Now, people living in areas with strong sunlight like Africa, have darker skin, while people living in other areas have lighter skin. The exception to this is the Inuit, who live in a place with little sunlight, but have dark skin because they eat a lot of fish and have enough vitamin D.

Evolution has given us a rainbow of skin colors. Humans have always had melanin to determine our skin color. What has changed through history is the environment where we have lived. This has in turn changed our melanin production, and eventually, skin color.

高二英语阅读理解中等难度题查看答案及解析

Many years ago my student asked me the question, “Mrs. Kindred, why do you teach?” Without taking time to reflect, I answered ,“Because someday I might say something that might make a difference in someone’s life.” Even though I was sincere, that wasn’t a very good answer and my student didn’t let it slide.

“Let me get this straight,” he said, “You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?” He shook his head as if I were crazy and walked away looking confused. I’m one of those people who look back and wish they had said something smart or witty, or swift.

Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:

It’s in my blood. My mother was my most influential teacher, and she was a 6^th grade reading teacher until her death in 1990. She instilled(逐渐灌输)in me a love of reading and the knowledge that education opens doors.

Teaching is a way to make a difference. If you throw a stone in a pond the ripples(波纹) go on and on until they reach the shore. You can’t have ripples without a “stone.” Good teachers throw stones that make a positive difference, and that’s what I strive to do.

I genuinely love teenagers. I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some potholes on the road of life, I want to do so. If they’ll allow me to celebrate their victories with them, I want to do too. Teaching isn’t for everyone, but I know I made the right career choice.

1. Why did the student continue to ask the question about the writer’s being a teacher?

A．Because he thought her answer was unbelievable.

B．Because the writer was insincere.

C．Because the student was naughty.

D．Because the answer was difficult to understand.

2. According to the text, which of the following is NOT true?

A．The writer’s mother has the greatest influence on her.

B．The writer’s answer made the student confused.

C．In the writer’s opinion, some people in the world are unfit to teach.

D．The writer annoyed the student who asked the question.

3. We can infer from the text that________.

A．the writer was also a good teacher in school

B．the writer often plays with her students beside a pond

C．the writer devotes herself to teaching and her students

D．the writer often accompanies the students on their way home.

高二英语单项填空中等难度题查看答案及解析

Many years ago my student asked me the question, “Mrs. Kindred, why do you teach?” Without taking time to reflect, I answered, “Because someday I do night and day something that might make a difference in someone’s life.” Even though I was sincere, that wasn’t a very good answer and my student didn’t let it slide.

“Let me get this clear,” he said, “You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?” He shook his head as if I were crazy and walked away looking confused. I’m one of those people who look back and wish they had said something smart or witty(风趣的).

Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:

It’s in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled(灌输) in me a love of reading and the knowledge that education opens doors.

Teaching is a way to make a difference. If you throw a stone in a pond the small waves go on and on until they reach the shore. You can’t have waves without a “stone.” Good teachers throw stones that make a positive difference, and that’s what I try to do.

I genuinely（真正地） love teenagers.

I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and I can help students avoid some potholes(坑) on the road of life, I want to do so. If they’ll allow me to celebrate their victories（胜利） with them, I want to do too.

Teaching isn’t for everyone, but I know I made the right career choice.

1.Why did the student continue to ask the question about the writer’s being a teacher?

A. Because he thought her answer was unbelievable.

B. Because the writer was not honest.

C. Because the student was naughty.

D. Because the answer was difficult to understand.

2.According to the passage, which of the following is Not true?

A. The writer’s mother has the greatest influence on her.

B. The writer’s answer made the student confused.

C. In the writer’s opinion, some people in the world are unfit to teach.

D. The writer annoyed the student who asked the question.

3.We can infer from the text that__________.

A. the writer was also a good teacher in school

B. the writer often plays with her students beside a pond

C. the writer devotes herself to teaching and her students

D. the writer often accompanies the students on their way home

4.What’s the main idea of the text?

A. A student’s silly question　　 B. A good teacher who likes students

C. A confused student　　 D. The reason why I teach

高二英语阅读理解困难题查看答案及解析

---How do you like the concert?

---I really enjoy it. I didn’t expect it was _____ wonderful.

A. more          B. most         C. very             D. as

高二英语单项填空困难题查看答案及解析

Many of you may wonder what else to do besides watching TV or surfing the Internet on weekends．Why not have a picnic? Junior 2 students at Beijing No．4 Middle Schoo1 had a “King of cooking” competition·

Earlier this month，about 300 students at the schoo1 went to a suburb(郊区)of Beijing to have the contest．They were divided into 24  groups．Each group had buyers，slicers  (掌刀)，firemakers．washers and cooks．

Firemakers faced the most problems during the time．Some of them had no idea how to keep fire burning．  “The fire kept going out．we had to blow at the sparks(火星)and put on corn leaves and old newspapers，”said Wu Mofei，13．

“It took us an hour to make the fire．Our eyes had tears from all the smoke and our faces became dirty，”he added．

When the fires were finally made，the cooks became the busiest people．Huang Lanye made fried celery(芹菜)and ham pickled cabbage(泡菜)and tomato soup．

She was proud of her work．“It’s my first time making Chinese dishes．My group members ate them up in minutes and said they were as delicious as what their parents made!” said the 14-year-old girl．

Finally over ten students were titled “King of Cooking”．Wang Xiaoyue，14，was one of them．“My group got a mark of 98 at the competition，’’Wang said．“We have 1earned a lot while

having so much fun! We are the best!”

Beijing No．4 Middle School has been organizing similar(类似的)fun activities for six years．“we want to give students a chance to get real life experiences and 1earn how to work as a team，’’said Jia Dong，who works for the school’s student affairs office．

1.The text mainly tells us——．

A．a “King of Cooking”  competition organized by Senior 2 students at Beijing No．4 Middle School

B．a picnic organized by Junior 2 students at Beijing N0．4  Middle School

C．a “King of Cooking”  competition organized by Junior 2 students at Beijing No．4 Middle School

D．after-school activities of students at Beijing No.4 Middlle School

2.Which of the following was not the problem some firemakers met?

A．They didn’t know how to keep fire burning．

B．They spent a long time in making a fire．

C．The fire kept going out．

D．They didn’t have enough corn leaves and old newspapers．

3.We can infer that Huang Lanye was a ___in their group

A．buyer  B．firemaker  C．washer  D．cook

4.According to the passage，we can know____．

A．only ten students were titled “King of Cooking” in this competition

B．the “King of Cooking” competition has been held once every year in the past six years

C．Wang Xiaoyue  was  titled  a “King  of  Cooking”  in  this  competition

D．Beijing No．4 Middle School has been encouraging students to take part in all kinds of competitions

高二英语阅读理解简单题查看答案及解析

You have two eyes and they are set close together on the front of your face. Have you wondered why? The reasons are simple and important to the way you see the rest of your world.

Your eyes are like two small cameras. A camera catches an image of an object and records it on film. Similarly, when you look at something, each eye takes in what it sees and sends this image to the back of the eyeball. Because your eyes are set close together, they view the world from about the same height but from slightly different angles. Working as a team, the eyes send the images to your brain, which puts them together into a single, centered image.

Seeing in stereo means seeing with two eyes working together, which is called stereoscopic sight. This allows you to view the world in three dimensions, or 3-D. Seeing depth helps you to judge the distance between you and the objects you see and to adjust to the changing angle at which you see something as you move closer to or farther away from it. If images are coming from only one eye, however, only two of these dimensions----height and width----can be perceived. A world seen with one eye is thus two-dimensional, as in a photograph.

Now consider why your two eyes are on the front of your face. Think of other animals with the same arrangement. They are all animals that hunt, like lions and wolves. Their eyes face directly in front of them. This provides a field of sight about 180 degrees wide, which is called binocular(双眼的) sight. On the other hand, animals that are hunted have eyes on the sides of the head, which provides nearly360-degree field of sight. In order to stay alive, they need to see things coming from the sides and from behind. However, without stereoscopic sight, they have difficulty determining how far a danger is.

With sight both stereoscopic and binocular, humans share with animal hunters the ability to see from side to side and to accurately determine the distance. If you think it would be great to have another type of sight, perhaps with hundreds of tiny eyes like many insects do, think again! Each tiny insect eye sees only a tiny part. Besides, what if you needed glasses? Be glad for the eyesight that you have.

1.According to the passage, the similarity of an eye and a camera is that they both　　　　　　　 .

A. can imagine objects　　　　　　 　 B. can record images

C. provide centered images　　　　 　 D. work at the same height

2.Stereoscopic sight is a result of having　　　　　　　　　 .　

A. two eyes close to each other that work together

B. hundreds of eyes, all seeing tiny parts of an image

C. a three-hundred-sixty-degree field of sight

D. one eye on either side of the head, each seeing a different image

3.What is the meaning of the underlined word “perceived” in Para3 most similar to?

A. known　　 　 B. seen　　 　 C. taken　　 　 D. understood

4.We can infer from the last paragraph that　　　　　　　　 .

A. our eyes work like cameras

B. animal hunters are glad for the sight they have

C. the three dimensions are depth, height and width

D. human beings are fortunate to have such eyesight

高二英语阅读理解中等难度题查看答案及解析