---Why are you so disappointed？---I went ther...

---Why are you so disappointed？

---I went there hurriedly and waited there for 3 hours，______ the tickets have been sold out．

A. only to be told　　 B. only to tell

C. telling　　 D. being told

高二英语单项填空困难题查看答案及解析

---I went up to speak to him， but he turned away and left．

---Why did he give you ______？　 You are good friends， aren't you？

A. a wet blanket B. a piece of cake

C. a green finger D. a cold shoulder

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

---Why do you look so upset?

---There are so many troublesome problems ____.

高二英语单项填空困难题查看答案及解析

---Why do you look so upset?

---There are so many troublesome problems _____.

A．remaining to be settled                   B．remained settled

C．remaining to settle                      D．remained to be settled

高二英语单项填空困难题查看答案及解析

---Why do you look so sad?

---There are so many problems_______.

A. remaining to settle　　　　　　　　　 B. remained settling

C. remaining to be settled　　　　　　　 D. remained to be settled

高二英语单项填空中等难度题查看答案及解析

－Why are you looking so worried? Is there anything I can do for you?

－The computer ________ break down when I nearly finished my composition.

A．can              B．should            C．must             D．dare

高二英语单项填空中等难度题查看答案及解析

Cold weather has a great effect on how our minds and our bodies work. Maybe that is why there are so many expressions that use the word “cold”. For centuries, the body’s blood has been linked closely with the emotions. People who show no human emotions or feelings, for example, are said to be cold-blooded. Cold-blooded people act in merciless ways. They may do brutal things to others, and not by accident. For example, a newspaper says the police are searching for a cold-blooded killer. The killer murdered someone, not in self-defense. He seemed to kill for no reason, and with no emotion, as if taking someone’s life meant nothing.

Cold can affect other parts of the body, the feet, for example. Heavy socks can you’re your feet, if your feet are really cold. But there is an expression—to get cold feet—that has nothing to do with cold or your feet.

The expression means being afraid to do something you have decided to do. For example, you agree to be president of an organization. But then you learn that all the other officers have resigned. All the work of the organization will be your responsibility. You are likely to get cold feet about being the president when you understand the situation.

Cold can also affect your shoulder. You give someone the cold shoulder when you refuse to speak to them. You treat them in a distant and cold way. The expression probably comes from the physical act of turning your back toward someone, instead of speaking to him face-to-face. You may give a cold shoulder to a friend who has not kept a promise he made to you, or to someone who has lied about you to others.

A cold fish is not a fish. It is a person. But it is a person who is unfriendly, unemotional and shows no love or warmth. A cold fish does not offer much of himself to anyone.

Out in the cold is an expression often heard. It means not getting something that everybody else got. A person might say that everybody but him got a pay raise, and that he was left out in the cold. And it is not a pleasant place to be.

1.The passage is intended to tell us that ______ .

A．cold weather has a great effect on human bodies

B．many English expressions contain the word “cold”

C．cold is a word closely linked with human emotions

D．the word “cold” has many different meanings in English

2.The underlined word “brutal” in Paragraph 1 most probably means “______”.

A．impolite          B．illegal             C．cruel             D．extreme

3.Which of the following expressions can best describe a person who is unwilling to offer anything to others?

A．Cold-blooded.      B．To get cold feet.     C．A cold shoulder.    D．A cold fish.

4.You can say Tom ______ if the teacher gives all the boys except him a pen as a prize.

A．is given the cold shoulder

B．is left out in the cold

C．has got cold feet

D．is murdered by a cold-blooded killer

5.We can draw a conclusion from the passage that ______ .

A．all the expressions containing the word “cold” have a negative meaning

B．all the expressions containing the word “cold” have something to do with cold

C．people who show no human emotions or feelings have cold blood

D．many parts of the human body can be badly affected by cold

高二英语阅读理解困难题查看答案及解析

--- Why do you look sad?

---There are so many problems ______.

高二英语单项填空简单题查看答案及解析