Many people in the world live in big cities, ...

Many people in the world live in big cities, which are often dirty and difficult places to live. So, some cities will get bigger. They will also get higher, and lower, because people will begin to live under the ground as well as in tall buildings. Scientists also say that men can begin to live in cities under the sea, when there is not enough space on the land. Of course, these new cities will be very expensive, and difficult to build, but they are not impossible. Already, some countries are building places to live under the ground so their people can go there if there is a new war. There are underground cities in Switzerland（瑞士）and China, built by the government（政府）to help some of the people live during a great war.

But will people change if they live under the ground for a long time？For example some fish go blind if they live in the dark sea for a long time. People will not go blind, because there will be light underground, but they may change in some way. Scientists say that people who live in cities today are losing their senses of smell, touch and taste. They can’t smell the dirty air, they can’t taste the chemicals（化学制剂）in their food. These senses are not as strong as before, when people lived in the country and grew their own food. The city has changed that. What will the underground city change in everyone？

1.People will live under the ground because _________．

A．it’s neither hot nor cold there

B．they’ll be afraid of the war

C．there’ll be less space on the ground

D．they’ll make their life comfortable

2.Some countries try to build some places under the ground so that people will be able to live there _____．

A．when summer comes

B．when a war breaks out

C．because they think it’ll be safer for them

D．when they’re fed up with the life on the land

3._________, so people who will live there won’t go blind．

A．There’ll be enough light under the ground

B．It’ll be easy to go upstairs

C．Glasses will be sold under the ground

D．Medicine will be supplied for free

4.People will lose some senses under the ground because _______．

A．the world are polluted

B．it’s dark there

C．the air is dirty and there are a lot of chemicals in their food

D．they can’t grow their own food in the sun

高二英语阅读理解中等难度题查看答案及解析

As the noises are ____of big cities, some people prefer to live in the countryside.

A. peculiar   B. particular   C. special   D. characteristic

高二英语单项填空困难题查看答案及解析

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 people often lose their chance to live life to the fullest because of procrastination, which means that they always delay doing something that must be done at once. Moreover, because they often put off their plans till “tomorrow”, they are less likely to achieve their goals and will give up their dreams and goals finally. As a result, we can say that procrastination is the enemy of a progressive lifestyle.

Now that we know procrastination is something bad, why do some people not take immediate action? Well, there are some things that result in procrastination. Depending on someone else rather than doing by oneself is one of the things. Whenever you wait for something to happen before you act, you make it easier to delay your goals and dreams until “someday”. Another cause of procrastination is that people do not value each moment in their day. Actually, it’s surprising how much you can do if you just decide to do little things with the little time you have. Also those who often procrastinate can always find a good reason for something they refuse to do at once.If you are one of those who often delay, then it’s time for you to make a decision to act now because things happen only when we decide to act. Get down to doing something like losing weight, saving money or spending more time with family. Don’t let these things continue to be a desire for you to do “someday”, but make a decision to do it now.

Once you have made your decision, write down the plan and take action immediately. Making plans can help you think carefully about how you are going to do what you need to do. After understanding how to do what you want to do, get doing with the plan. It doesn’t matter how small the move you make is as the little things you do accumulate（累积）over time and move you to be closer to your goals. So, don’t wait until tomorrow; instead, start now! Just make use of every moment you have to do something that is helpful in realizing your dreams and goals.

Here is a challenge that will also move you to be closer to your dreams and goals if taken seriously. Make a list of ten things you have been putting off. It could be anything from getting a health examination, calling a friend or family member, to getting the car fixed and cleaning up the garbage, etc. And then try to develop the habit of doing them immediately!

高二英语填空题中等难度题查看答案及解析

Rush hour traffic is a problem in many big cities around the world. Commuters(上下班者)rush to and from their jobs in cars, buses, subways, trains, and even on bicycles. Large cities in the United States have two rush hours—one in the morning and one in the evening. But in cities in other parts of the world, there are four rush hours. In Athens and Rome, for example, many workers go home for lunch and a nap. After this midday break, they rush back to their jobs and work for a few more hours.

In Tokyo, there's a big rush hour underground. Most of the people in Tokyo take the subways. The trains are very crowded. Subway employees called packers wear white gloves and help pack the commuters into the trains when the doors close. They make sure that all purses, briefcases, clothes, and hands are inside the trains.

In Seoul, many commuters prefer to take taxis to get to work.. To hail a cab，many people stand at crossroads and raise two fingers. This means they'll pay the cab driver double the usual fare. Some people even raise three fingers! They'll pay three times the normal rate。

Streets in Rome are very crowded with automobiles and mopeds(摩托自行车)during rush hours. The city can't make its streets wider, and it can't build new highways, because it doesn't want to disturb the many historic sites in the city, such as the Forum and the Coliseum. It took the city fifteen years to construct a new subway system. Construction had to stop every time workers found old artifacts and discovered places of interest to archaeologists(考古学家).

In many big cities, there are special lanes on highways for carpools. These are groups of three or more people who drive to and from work together. They share the costs of gas and parking and take turns driving into the city.

Getting to work and getting home can be difficult in many places around the world. Rush hour traffic seems to be a universal problem.

1.Big cities have traffic problems during rush hours because there are _______

2.Most of the commuters in Tokyo _______

3.To “hail a cab” means to _______

4.Commuters in carpools probably_______

高二英语阅读理解中等难度题查看答案及解析

A city in South Korea, which has the world’s largest number of people using smartphones, has placed flashing lights and laser beams at a road crossing to warn “smartphone zombies” to look up and drivers to slow down, in the hope of preventing accidents.

The designers of the system were motivated by growing worry that more pedestrians glued to their phones will become victims in a country that already has some of the highest road death and injury rates among developed countries. State-run Korea Institute of Civil Engineering and Building Technology (KICT) believes its system of flashing lights at zebra crossings can warn both pedestrians and drivers.

In addition to red, yellow and blue LED lights on the pavement, “smombies” - smartphone zombies - will be warned by laser beam projected from power poles and a warning sent to the phones by an app that they are about to step into traffic.

“Increasing number of smombie accidents have occurred in pedestrian crossings, so these zombie lights are essential to prevent these pedestrian accidents,” said KICT senior researcher Kim Jong-hoon. Drivers are warned by the flashing lights, which have shown to be effective 83.4 percent of the time in the institute’s tests involving about 1,000 vehicles.

In 2017, more than 1,600 pedestrians were killed in auto related accidents, which is about 40 percent of total traffic deaths, according to data from the Traffic Accident Analysis System. For now, the smombie warning system is placed only in Ilsan, a suburban city about 30 km northwest of the capital, Seoul, but is expected to go nationwide, according to the institute.

Kim Dan-hee, a 23-year-old resident of Ilsan, welcomed the system, saying she was often too absorbed in her phone to remember to look at traffic. “This flashing light makes me feel safe as it makes me look around again, and I hope that we can have more of these in town,” she said.

1.What do the underlined words “smartphone zombies” in paragraph 1 refer to?

A.Drivers driving after drunk. B.Pedestrians buried in their phones.

C.Passengers crazy about phones. D.Policemen in charge of traffic.

2.What do we know about the warning system?

A.It has reduced death rate by 83.4%. B.It has been spread nationwide.

C.It gives a warning to the smartphones. D.It is being tried out in many places.

3.What was the residents’ attitude to the traffic system?

A.Negative. B.Unconcerned.

C.Disapproving. D.Favorable.

4.What is the best title for the text?

A.South Korea Warns Smartphone Zombies of Traffic

B.Flashing Lights Are Used to Prevent Accidents

C.Smartphone Zombies Are Causing Traffic Accidents

D.South Korea Uses a New Traffic System

高二英语阅读理解中等难度题查看答案及解析

The big hospital, which___in 1936, has saved many lives.

高二英语单项填空简单题查看答案及解析

Many children, ____ parents are away working in big cities, are taken good care of in the village.

A．their             B．of them           C．whose            D．with whom

高二英语单项填空中等难度题查看答案及解析

Many children, __parents are away working in big cities, are taken good care of in the village.

高二英语单项填空简单题查看答案及解析