---I feel terrible ,but I’ve just broken your...

---I feel terrible ,but I’ve just broken your ashtray.

--- ________, for I had meant to change it.

A. Go head                        B . No problem

C. it’s nothing to get upset about            D. I’ll look into it immediately

高二英语单项填空中等难度题查看答案及解析

It happens from time to time: you feel terrible when you take your first bite of a certain food, but after eating more, you find yourself enjoying it. This is what is called an acquired taste. But why do our tastes change?

The answer, according to a recent study presented at an American Chemical Society meeting in Boston, lies in proteins in our saliva (唾液).

Most of us tend to think saliva, almost entirely made up of water, is “only a mouth lubricant (润滑剂) helping us to swallow food,” the New York Times said. However, it also contains many proteins, which can help break food down, protect our teeth and help in tasting food.

To explain how these proteins affect taste, a team of scientists from Purdue University in the US invited 64 volunteers to drink a bitter-tasting chocolate milk three times a day for six weeks and rated their tastes at the same time.

According to the research, the participants found a strong bitterness on the first day, but the unpleasant flavor came to decrease as time went on and finally disappeared.

That is not all that was changing. A noticeable increase in the levels of proline-rich (富含脯氨酸的) proteins was found in the saliva samples of the test subjects in the research period. These proteins serve to reduce the bitterness we taste and improve our adaptation to this flavor.

“We think the body adapts to reduce the negative feeling of these bitter compounds,” said Cordelia Running, a food scientist at Purdue University. “Saliva changes flavor, which in turn changes eating choices.”

This change in taste not only makes the food tastier, but also helps people keep an appetite for healthy food whose flavor might otherwise keep them away.

One day, these proteins may even be extracted (提炼) and used as a separate food additive that could help people stick to healthy food whose flavor they continue to dislike, researchers told Science Alert. And according to Running, even it doesn’t happen, the idea that “maybe some little piece of your body is actually trying to help you” could really benefit some people. Let’s wait and see.

1.What does the underlined phrase “an acquired taste” in Paragraph 1 refer to?

A. The appetite for healthy food.

B. A mouth lubricant helping to swallow the food.

C. Something that tastes very delicious at first bite.

D. A preference that is only formed after great repetitions.

2.What contributes to the changes of our taste?

A. Our negative feelings of food.　　 B. Our adaptation to this flavor.

C. The proteins in our saliva.　　 D. The flavor of the food.

3.Which of the following statements is TRUE according to the text?

A. Saliva consists of many proteins besides water.

B. The unpleasant flavor will increase with time going on.

C. A separate food additive has been extracted from the proteins.

D. Proteins have nothing to do with the changes of our taste.

4.What can we infer from the last paragraph?

A. There will be bitter candy in the future.

B. You can change the flavor as you like in the future.

C. The researches will go on studying these proteins.

D. It won’t be long before we can make unhealthy food healthy.

高二英语阅读理解中等难度题查看答案及解析

—I’m feeling terrible and lonely all the time, what should I do?

—______! Try to talk to your friends, and take good care of your health.

A. Go ahead                  B. Take it easy      C. That’s right                 D. Don’t mention it

高二英语单项填空简单题查看答案及解析

A dog can’t speak words, but it can “talk”. It has feelings just as you do. At times it may feel angry or afraid. Watch a dog closely. You can see what it is trying to tell you. When you are afraid, you may look down shyly. A fearful dog looks away from you. It may run away too. When you are angry with people, you stare at them and press your lips together. An angry dog also stares. Sometimes the hair along its back stands up.

Do you feel guilty when you have done something you shouldn’t? Dogs can feel guilty, too. At times when I come home, my dog gives me a guilty look. Then I know he’s done something wrong.

Dogs need love and attention. Some dogs are very unhappy when they are left alone for a long time. Some dogs even snap(撕咬) if they don’t get enough attention.

You may have a dog or you may know a dog. Treat it well if you want to have fun with it. Play with it. Take it for a walk. Don’t order it round too much. Try not to punish it one time and not the next for doing the same thing. Always remember, a dog has needs and feelings just as you do. Talk to a dog, it’ll talk to you, too.

1.If a dog snaps at things, it is because it may ______.

A. feel lonely　　　　　　　　　　　　　　 B. feel shy

C. be fearful　　　　　　　　　　　　　　 D. be disappointed

2.You can tell that a dog has done something bad when _________.

A. its hair stands up

B.　 it runs away from you

C. it has a guilty expression

D. its lips are pressed together

3.Which of the following things does the writer advise you to do towards your dog?

A. Never punish the dog

B. Never leave the dog alone

C. Train the dog to take orders from you

D. Train it the way you want to be treated.

4.The underlined word “guilty” in the second paragraph most probably means _______.

A. happy　　　 　　　 　 B. sorry

C. frightened　　　　 D. excited

高二英语阅读理解中等难度题查看答案及解析

Drinking can make teens feel good, but that lasts only a short time. Alcohol clouds your brain and limits your ability to make decisions. Excessive drinking gradually makes your brain shrink and can cause serious damage. Over-drinking can cause learning disabilities and damage your memory. It distorts your vision and leads to blackouts. Teenagers often think that drinking will give you more energy, but alcohol isn’t an energy drink; it’s a depressant.
　　 Drinking and driving is one of the top causes of death for teen boys. An alcohol-related motor vehicle crash kills one person every 33 minutes and injures someone every two minutes. The rate of teenagers driving drunk is so high that the government is trying to pass new laws restricting(限制) teen driving.
　　 When we get to high school, friends start pressuring us to drink. High school students see alcohol a way to become popular. I created a survey at my school. Twenty-four of the 63 respondents predicted they would drink in high school. Eleven said maybe, and 28 said they don’t plan on drinking. Regardless of what they say now, things can change. Teens starting high school want to fit in.

Some people will do anything to be accepted, including potentially hurting themselves. They think that one drink won’t do anything. A little bit of alcohol probably won’t kill you, but it can lead to poor decisions. High school is the time to experiment with what you want to do in life, but if you’re experimenting with alcohol you could hurt someone, including yourself.

1.The government is passing laws to restrict teen driving because _________.

A. Teens’ drunk driving cause deaths easily

B. Many teens like driving

C. Alcohol weakens the driving skills of teens

D. Most teens are poor in driving skills

2.Some students in high school start drinking mainly because _________.

A. They think drinking is quite interesting

B. They want to fit in with the surroundings

C. They want to imitate adults around them

D. They don’t think high school an important period

3.Which of the following statements is true according to the passage?

A. Most teens in high schools like drinking

B. Teens who drink are mostly forced to do so

C. One little sip of alcohol ruins one’s memory

D. The start of drinking potentially damages one’s life

4.We may infer from the passage that __________.

A. Drinking can make teens feel good for a long time.

B. Drinking is becoming very common in high schools.

C. Surrounding people and environment affects teens in drinking.

D. Drinking is bad to one’s brain but good to one’s body.

高二英语阅读理解中等难度题查看答案及解析

Easy Ways to Keep Your Brain Sharp

Everyone is forgetful, but as we age(变老), we start to feel like our brains are slowing down a bit—and that can be a very annoying thing. ________1.________ Read on for some techniques worth trying.

1. ________2.________

People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer's disease (早老性痴呆症), according to a recent study. ________3.________ Something as simple as setting a goal to have a weekly coffee date with a friend will do. There's evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.

2. Go for a walk

Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain. ________4.________

3. Learn something new

Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time. ________5.________ Or go dancing with your friends.

A. Focus on the future.

B. This can be especially harmful to the aged.

C. It should be something like learning gardening.

D. So take a few minutes each day to do some reading.

E. But don't worry if your schedule isn't filled with life-changing events.

F. Luckily, research shows there is a lot you can do to avoid those moments.

G. In other words, when you take care of your body, you take care of your brain.

高二英语信息匹配中等难度题查看答案及解析

Easy Ways to Keep Your Brain Sharp

Everyone is forgetful, but as we age, we start to feel like our brains are slowing down a bit- -and that can be a very annoying thing. 1.Read on for some techniques worth trying.

1. 2.

People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer’s disease (早老性痴呆症)，according to a recent study. 3.Something as simple as setting a goal to have a weekly coffee date with a friend will do. There’s evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.

2. Go for a walk.

Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain. 4.

3. Learn something new.

Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time. 5.Or go dancing with your friends.

A.Focus on the future.

B.This can be especially harmful to the aged.

C.It should be something like learning gardening.

D.So take a few minutes each day to do some reading.

E.But don’t worry if your schedule isn’t filled with life changing events.

F.Luckily, research shows there is a lot you can do to avoid those moments

G.In other words, when you take care of your body, you take care of your brain.

高二英语七选五中等难度题查看答案及解析

Easy Ways to Keep Your Brain Sharp

Everyone is forgetful, but as we age, we start to feel like our brains are slowing down a bit—and that can be a very annoying thing.  1. Read on for some techniques worth trying.

1. 2.

People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer's disease (早老性痴呆症), according to a recent study. 3.Something as simple as setting a goal to have a weekly coffee date with a friend will do. There's evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.

2. Go for a walk

Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain. 4.

3. Learn something new

Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time. 5.Or go dancing with your friends.

A. Focus on the future.

B. This can be especially harmful to the aged.

C. It should be something like learning gardening.

D. So take a few minutes each day to do some reading.

E. But don't worry if your schedule isn't filled with life-changing events.

F. Luckily, research shows there is a lot you can do to avoid those moments.

G. In other words, when you take care of your body, you take care of your brain.

高二英语信息匹配中等难度题查看答案及解析

Easy Ways to Keep Your Brain Sharp

Everyone is forgetful, but as we age, we start to feel like our brains are slowing down a bit- -and that can be a very annoying thing. 1.Read on for some techniques worth trying.

1. 2.

People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer’s disease (早老性痴呆症)，according to a recent study. 3.Something as simple as setting a goal to have a weekly coffee date with a friend will do. There’s evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.

2. Go for a walk.

Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain. 4.

3. Learn something new.

Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time. 5.Or go dancing with your friends.

A. Focus on the future.

B. This can be especially harmful to the aged.

C. It should be something like learning gardening.

D. So take a few minutes each day to do some reading.

E. But don’t worry if your schedule isn’t filled with life changing events.

F. Luckily, research shows there is a lot you can do to avoid those moments

G. In other words, when you take care of your body, you take care of your brain.

高二英语信息匹配中等难度题查看答案及解析

Your class starts in 10 minutes, but you find yourself 1. (stick) in traffic. Don’t panic. With just a press of a button, your car will lift off the ground and fly to school. What’s your 2.(impress)? It seems like science fiction, but it isn’t. Engineers have taken 3. the research of flying cars, and they have already found 4. (solve) to many of the big challenges. They predict that we’ll all be using these amazing vehicles one day. According to Car Trends Magazine, one model, 5. is part car and part plane, is going to be on the market in 6. not-so-distant future. It will look like a regular car when it’s on the road, but its wings will unfold when the driver 7. (decide) to take to the sky. And 8. (operate) by a computer, all controls will be automatic. Imagine this: You’ll be doing your homework while your car is getting you to school 9. (safe). And what does this future dream car cost? Well, at first it will be about a million dollars, but after a few years, you’ll be able to buy 10. for “only” $60,000. Don’t throw away your old driver’s license just yet!

高二英语语法填空中等难度题查看答案及解析