As a result of __ is now known in physics and...

As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.

A. it     B. what     C. which     D. that

高三英语单项填空中等难度题查看答案及解析

In South America, the rich soil of the Amazon River basin（流域）in Brazil is known as “black gold”. Scientists found that the secret of this rich soil was charcoal（木炭）. Local people made it from animal bones and tree branches. They mixed the charcoal with the soil about 1.500 years ago.

Now, scientists in the United States have done a modern demonstration. They say charcoal fertilization offers a revolutionary way to improve soil quality for hundreds or even thousands of years.

Mingxin Guo and his team at Delavare State University heated tree leaves, corn stalks（茎）, small pieces of wood and poultry waste into “biochar”（生物碳）. They reported their findings at a recent meeting of the American Chemical Society in New Orleans.

Biochar could be good news for farmers with poor soil and hungry populations to feed. Professor Guo says it could even help against global warming. Intensive（集约的） farming and overuse of chemical fertilizer give out carbon dioxide into the atmosphere. Biochar does the opposite, he says. It traps carbon in the ground.

The researchers planted winter wheat in containers of soil in a greenhouse — some with biochar, some without. Professor Guo says the wheat grows much better in the pots with biochar. The soil was added two percent charcoal to. But he says even a one percent treatment will increase productivity.

The results demonstrated that biochar can increase organic matter in soil. Loss of nutrients in soil is an increasing problem worldwide as farmers try to grow more food for growing populations.

Next, the team will carry out a five-year study of biochar with spinach（菠菜）, green peppers and tomatoes.

Mingxin Guo says he learns about the “black gold” in Brazil from a magazine story. He explains that it was discovered in the jungle, in the area where waters flow to the Amazon, in the 1960’s. But it was not until recent years that scientists began to bring public attention to it.

1.According to the passage, which of the following statements is TRUE?

A．The researchers will go on proving their theory.

B．The leading researcher learns the theory from the magazine.

C．Charcoal was discovered 1,500 years ago.

D．Common farming can produce more carbon dioxide.

2.Biochar has the following advantages EXCEPT that ________.

A．it can improve the condition of the soil

B．it can be used as a kind of energy

C．it can help against global warming

D．it can increase productivity of the corn

3.According to the research, the biochar can help against global warming because it can ________.

A．reduce the carbon dioxide

B．keep the carbon in the soil

C．reduce the loss of nutrients in the soil

D．absorb the carbon dioxide

4.Which of the following can be the best title of the passage?

A．Using Charcoal to Make soil into “Black Gold”

B．Using Charcoal to Reduce the Carbon Dioxide

C．How Amazon River Basin Produces “Golden Black”

D．Guo’s Research on Producing Biochar

高三英语阅读理解中等难度题查看答案及解析

In the opinion of Li Ming, a science student in that high school, physics is_______ chemistry, but much easier than English.

A. as difficult a subject as            B. as a difficult subject as

C. a subject so difficult as            D. difficult as a subject as

高三英语单项填空中等难度题查看答案及解析

．As is _______ known, a good knowledge of basic physics helps us better understand natural phynomenons.

A. universally          B. specifically        C. adequately         D. completely

高三英语单项填空简单题查看答案及解析

As is known to us all, success usually results from diligence while laziness and copying others _____ can lead to losses and failure.

A. blindly　　　 　　　　 B. automatically

C. awfully　　　　　　　　 D. annually

高三英语单项填空中等难度题查看答案及解析

As is known to us all, success usually results from diligence while laziness and copying others _____ can lead to losses and failure.

A. blindly　　　　 　　　　 B. automatically

C. awfully　　　　　　 　 D. annually

高三英语单项填空中等难度题查看答案及解析

Jack, I’m afraid I’ll turn to you．I think chemistry is _______ physics．

A．as a difficult subject as            B．a subject the same difficult as

C．as difficult a subject as            D．the same difficult subject as

高三英语单项填空中等难度题查看答案及解析

British people eat less fruit and vegetables than other people in Europe. As a result,  British now has one of the worst heart disease __16.______(record) in the world., and each year more and more people have other health problems such as _17_____(be) too fat. Also, children eat much _18.______(little)fruit and vegetables than before. The government is very worried about that and has to do something to change it.

With the help of the government, _19______3-year Food Dude Program began _20_______ September, 2005. The program __21_____(start) by the University of Wales Bangor. It tries to help children eat more fruit and vegetables __22______in school and at home. Over 30,000 children from 150 primary shcools have joined the program. Children wathch the six parts of the Food Dudes cartoon over 16 school days. It's just long enough to get the children ____23____(eat) fruit and vegetables again and again until they begin to like the taste.

The results show that the program has been a great success, and will soon become popular around the world. Even the US and Canada take the Food Dudes Program very ___24____(serious) and in 2006 it ___25____(win) the World Health Organization best practice award.

高三英语单词拼写中等难度题查看答案及解析

As is known, healthy foods can help save your life. Now, here is a list of healthy foods that can save your memory. It is best that every person knows what he eats, as he takes in, can make or break himself, in terms of health.

Fish is helpful in regaining back the kind of memory that a person once has. Eating fish can help you save the trouble of forgetfulness. Vegetables rich in fiber and other dark and green leafy kinds are very suitable for people who want to avoid mental blocks. These foods contain high units of vitamin E.

Another food that is considered having different effects on preventing this brain deficiency (缺陷) is avocado (鳄梨), which is also rich in vitamins E and C. It is really good to know these healthy foods that can save your memory are always at hand so as to help you in your fight against diseases. Sunflower seeds are regarded as Vitamin C-powered seeds and also give you enough energy.

As for red wine, do not over consume it, as it is said to have to be taken in moderate amounts in order to help the body. Over-drinking can cause illness and like anything else. This is considered as one of the healthy foods that can save your memory; alcohol can otherwise lose it.

It is better to consume colored bread, rice and whole grains for you to get the best out of fiber. These foods can lower the body’s risk of being infected with Alzheimer’s disease（老年痴呆病）.

Knowing the healthy foods that can save your memory is living the life that you have longed and desired. Among the others, the best, of course, is exercise. Taking in different kind of exercises, physical activities or sports can keep both your body and mind healthy.

1. If you suffer from loss of memory, you _______.

A. should eat cucumbers and cabbages        B. can drink as much wine as possible

C. had better take in fish in your meals        D. may as well take more Vitamin C

2. To prevent mental disease from happening, _______.

A. people are advised to take avocados      B. it is best to eat vegetables high in fiber

C. it is better to have more sunflower seeds    D. red wine is the first and best choice

3. Which of the following is the most important for health?

A. Drinking a proper amount of red wine every day.

B. Eating bread made of whole grains.

C. Adding Vitamin C-powered seeds to meals.

D. Taking moderate exercise every day.

4. How many means for health does the author mention in the passage?

A. Six          B. Seven            C. Eight            D. Nine

5. Which of the following is most suitable for the passage?

(①=Para.1   ②=Para.2   ③=Para.3   ④=Para.4   ⑤=Para.5   ⑥=Para.6)

①                             ①

↙  ↘                       ↙  ↘

A.      ②③④⑤               B.      ②③   ④⑤

↖   ↗                       ↖   ↗

⑥                              ⑥

①                             ①

↙   ↘                        ↙   ↘

C.      ②    ③④⑤           D.      ②     ③

↖  ↗                              ↙↘

⑥                                ④ ⑤

↖↗

⑥

高三英语阅读理解中等难度题查看答案及解析

As is known, healthy foods can help save your life. Now, here is a list of healthy foods that can save your memory．It is best that every person knows what he eats, as he takes in, can make or break himself, in terms of health．

Fish is helpful in regaining back the kind of memory that a person once has．Eating fish can help you save the trouble of forgetfulness．Vegetables rich in fiber and other green leafy kinds are very suitable for people who want to avoid mental blocks．These foods contain high units of Vitamin E．

Another food that is considered having different effects on preventing this brain deficiency(缺陷) is avocado (鳄梨), which is also rich in Vitamins E and C．It is really good to know these healthy foods that can save your memory are always at hand so as to help you in your fight against diseases．Sunflower seeds are regarded as Vitamin C-powered seeds and also give you enough energy．

As for red wine, do not over consume it, as it is said to have to be taken in moderate amounts in order to help the body. Over-drinking can cause illness. This is considered as one of the healthy foods that can save your memory; alcohol can otherwise lose it．

It is better to consume food made of grains such as bread, rice, and whole grains to get the best out of fiber．These foods can lower the body’s risk of being infected with Alzheimer’s disease(早老性痴呆病).

Knowing the healthy foods that can save your memory is living the life that you have longed and desired．Among the others, the best, of course, is exercise. Taking part in different kinds of exercises, physical activities or sports can keep both your body and mind healthy.

1.If you suffer from loss of memory, you________ ．

A. should eat cucumbers and cabbages

B. can drink as much wine as possible

C. had better take in fish in your meals

D. may as well take more Vitamin C

2.To discourage mental disease from happening, _______．

A. people are advised to take avocados

B. it is best to eat vegetables high in fiber

C. it is better to have more sunflower seeds

D. red wine is the first and best choice

3.How many healthy foods does the author mention in the passage?

A. Six　　 B. Five　　 C. Four　　 D. Three

4.What does the author stress in the last paragraph?

A. The best form of exercise

B. The way of keeping healthy

C. The importance of healthy foods

D. The importance of exercise.

5.Which of the following shows the structure of the passage?

( ①=Para．1　　 ②=Para．2　　　 ③=Para．3

④=Para．4　　 ⑤=Para．5　　　 ⑥=Para．6)

高三英语阅读理解中等难度题查看答案及解析