They have leading experts in this field，and t...

They have leading experts in this field, and that's ____ they've made important progress.

A. where B. why C. whether D. who

高三英语单项填空中等难度题查看答案及解析

They have leading experts in this field，and that's __________ they've made important progress．

A．where    B．why

C．whether    D．who

高三英语单项填空中等难度题查看答案及解析

He is really an excellent doctor and he is____to becoming an expert in this field.

A. in a way　　 　　 B. by the way

C. on the way　　 D. under way

高三英语单项填空中等难度题查看答案及解析

It seems to some experts that 56. com, youku. com and tudou.com ___90% of the video market in this area.

A. make up   B. put up   C. set up   D. take up

高三英语单项填空困难题查看答案及解析

It seems to some experts that 56．com, youku．com and tudou．com _____ 90% of the video market in this area．

高三英语单项填空中等难度题查看答案及解析

The professor gives every one of us the impression________he is a real expert in this field.

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

高三英语单项填空中等难度题查看答案及解析

Some experts have said that ________ children believe they can succeed, they will never become totally confident of themselves.

A．if　     B．since

C．once     D．unless

高三英语单项填空中等难度题查看答案及解析

　1.　This was not because the woods and fields were always far away, but because they were too far from the city to permit people to make a day trip between morning and nightfall.

　2.　He decided to turn his little school house into a dormitory for the summer holidays. Anyone who brought his sleeping bag and cooking equipment along could stay there for a very small quantity of money. The idea was a success. A few years later, the school house was much too small to hold the many young people who wanted to stay there. 　 3.　This was the first hostel(青年招待所).

Today, young students and workers of every country can meet in the hostel and get to know each other. When young people arrive at the hostel, they have only to show their cards of membership in a hostel organization in their own country. 　 4.________

Often, at the evening meal, a group of boys and girls from various parts of the country or world will happen to meet at the same hostel. They may put their food together and prepare a dinner with many kinds of dishes. Sometimes a program will be organized after the meal with dances, songs, or short talks followed by a question period. 　 5.　For this reason, a few weeks spent ‘hostelling’ can be just as useful a part of one’s education as classes in school.

A. In 1970, a young German school master had an idea which changed this situation.

B. People could stay in the hostel if they brought enough equipment with them.

C. One can learn a lot about other places, just by meeting people from those places.

D. As a result, a dormitory was set up in an old castle nearby.

E. For years, children in the industrial areas of Europe seldom left their cities to see the beauties of the countryside.

F. More and more young people went to the hostel for summer holidays.

G. This card will permit them to stay in a hostel all over the world for very low prices.

高三英语完型填空中等难度题查看答案及解析

This book will show the readers ______ can be used in other contexts.

A．how that they have observed              B．that how they have observed

C．how what they have observed              D．that they have observed

高三英语单项填空中等难度题查看答案及解析

It is a mystery that has puzzled doctors for decades. But experts believe they have now finally solved the tricky question of why winter is notoriously known as the flu season.

According to a new research, the influenza virus coats itself in a protective fatty shield that is tough enough to resist cold temperatures. The butter-like material only melts when it hits the respiratory tract（呼吸道）, leaving the virus free to infect cells-- a process scientists say is like an M&M melting in the mouth.

However, in warmer outdoor temperatures, the protective coating melts before it reaches a person or an animal, killing the bacteria before they can infect someone. Joshua Zimmerberg, from the National Institute of Child Health and Human Development (NICHD), in the US, which led the study, said: “Like an M&M in your mouth, the protective covering melts when it enters the respiratory tract. It's only in this liquid period that the virus is able to enter a cell to infect it.”

In the past, scientists worked on theories that flu is more common in winter because people spend more time inside or the radiation from the sun in summer kills off germs. But no research successfully explained the spread of the disease.

Researchers have already claimed that the report, which is published in the journal Nature Chemical Biology, could lead to new ways to prevent and treat flu. “Now that we understand how the flu virus protects itself so that it can spread from person to person, we can work on ways to prevent it.”

Influenza and other respiratory viruses are spread in small drops broadcast by coughing, sneezing and talking and which can also settle onto surfaces, to be picked up on fingertips.

1. What can be the best title of the passage?

A. The mystery that has puzzled doctors for decades.    B. New ways to prevent and treat flu.

C. A discovery of how flu strikes in Winter.            D. Ways found to prevent flu.

2. Which of the following statements is NOT true?

A. Doctors have been trying hard to discover why flu strikes in winter.

B. In the past, scientists didn’t know how flu spreads.

C. It is possible that flu virus will no longer threaten humans in winter.

D. People get affected by flu because they spend much more time inside in winter.

3. Where should you insert the following paragraph into the passage?

Duane Alexander, the director of NICHD, said: “The study results open new avenues of research for thwarting (使…受挫)winter flu outbreaks.”

A. Between Paragraphs 1 and 2.     B. Between Paragraphs 3 and 4.

C. Between Paragraphs 4 and 5.     D. Between the last two paragraphs.

4.In what process or order does flu occur?

a. The virus infects cells                 b. The influenza virus was born

c. The butter-like material melts           d. The virus hits respiratory tract

e. The virus coats itself in butter-like shield  f. The virus is free

A. a, c, d, e, b, f .     B. c, f, d, b, e, a.    C. b, e, d, c, f, a.    D. d, b, e, c, f, a.

高三英语阅读理解简单题查看答案及解析