As we all know, ______ medical examination will help us find out health problems as early as possible.
A. common B. general C. regular D. normal
高二英语单项填空简单题
As we all know, ______ medical examination will help us find out health problems as early as possible.
A. common B. general C. regular D. normal
高二英语单项填空简单题查看答案及解析
As we all know, looking away from people or yawning will, _______, make us appear to be uninterested.
A. for one thing B. by all means
C. in most cases D. at one time
高二英语单项填空简单题查看答案及解析
As we all know ,trees are important to our life. They provide us with food, wood and most importantly, oxygen. Now there is one more thing we can add to this list—blocking out harmful bacteria in water.
The discovery was made by some scientists and high school students who were seeking for a natural water filter(过滤器)—one that could help people in developing countries that don’t have access to modern water systems.
The researchers, led by Rohit Karnik, a professor ,decided to turn to trees for help because they were able to allow liquid to flow through while blocking out air bubbles(气泡）.
They began by cutting 1.5-inch-wide sections of tree bark from the branch of a white pine tree. The researchers then tested the wood’s filtering ability by pouring water containing red dye particles(染料颗粒)of different sizes through. To their surprise, they found it was effective in trapping all the particles. Encouraged, the team did another experiment, this time with water containing bacteria. Sure enough, the bark held back 99%of the bacteria, allowing only 1% to flow through.
Mr. Karnik said the bark was able to filter water containing much smaller particles. This means that it can be used to get rid of most of the bacteria. However, what troubles them is that tree bark cannot hold back viruses, which tend to be much smaller.
Though the experiment is successful, we must remember one thing—the bark only works when damp. This means that before this natural filter can be put to practical use, the researchers will have to figure out how to keep the bark damp, or find a way to keep the bark’s great filtering ability even when it’s dry.
But the study is not done. The researchers plan on testing other types of trees, including those flowering trees. They think those may be more effective in trapping smaller particles and even viruses.
1.How will the discovery affect the world?
A. No harmful bacteria will be found in water.
B. There will be no water pollution around the world.
C. More pine trees will be planted around the world.
D. Clean water will be more accessible in developing countries.
2.What problem troubles the researchers when using the trees bark as a water filter?
A. Viruses cannot be prevented.
B. Tree bark should be wet.
C. It’s hard to remove air bubbles.
D. Not all bacteria can be held back.
3.Why does the team plan to do other experiments?
A. To find other natural water filters.
B. To improve the filtering ability of other trees.
C. To find a way to keep the bark wet.
D. To test the filtering ability of other trees.
4.In which column of a newspaper can we read this text?
A. Culture. B. Science.
C. Lifestyle. D. Society.
高二英语阅读理解中等难度题查看答案及解析
完形填空
阅读下面短文，从短文后各题所给的四个选项中选出可以填入空白处的最佳选项。
We all know that sports may help us become stronger. But their _____ go far beyond this. Research shows that sports that _____ aiming and hitting skills, for example, tennis, badminton and baseball, help children increase _____. They help develop leadership qualities and _____ team spirit in kids. They involve competition. Playing sports teaches them to accept _____ with a positive spirit when they lose a game.
Playing sports does a lot of good to the development of _____ skills. Sports teach you to communicate with people and work together as a _____. Sports improve collective thinking and help develop your planning and organizational skills, too. Sports build _____, since winning a game always gives you a sense of accomplishment.
Playing sports requires you to strategize (制定策略). You need to be very _____to score goals or earn points. You need to _____ strategies to win. You need to judge your competitor’s strategy and revise yours _____ . This certainly involves clever thinking, which sports _____. Studies show that kids who play sports _____do well in school and college.
Playing sports brings you _____. Jumping about, running around, racing to get ahead, _____, falling and standing up again, all of them are a(n) _____ of playing sports. There is no _____to the happiness this brings. _____, sports are a form of exercise which produces happiness molecules (分子) in your body, thus improving your mental health. You can’t be sad_____ playing sports. Sports produce _____energy in you and the people around you.
1.A. courses B. benefits C. challenges D. decisions
2.A. add B. fit C. lack D. involve
3.A. focus B. courage C. weight D. strength
4.A. break B. shake C. raise D. change
5.A. explanations B. Punishments C. congratulations D. failures
6.A. musical B. social C. medical D. technical
7.A. team B. nation C. class D. family
8.A. friendship B. judgment C. confidence D. enthusiasm
9.A. brave B. smart C. generous D. humorous
10.A. put off B. make up C. take over D. work out
11.A. accordingly B. generally C. equally D. largely
12.A. prepare B. recognize C. encourage D. promise
13.A. formally B. frequently C. naturally D. completely
14.A. hope B. honor C. pride D. pleasure
15.A. cheering B. dreaming C. chatting D. quarreling
16.A. case B. field C. part D. amount
17.A. method B. match C. risk D. trouble
18.A. For example B. As a result C. In addition D. In other words
19.A. while B. before C. unless D. since
20.A. serious B. nervous C. positive D. creative
高二英语完形填空中等难度题查看答案及解析
As we all know, ________life is hard for any of us.If we want to live________happy life，we must work harder.
A．/；/ B．/；a C．a；/ D．a；a
高二英语单项填空中等难度题查看答案及解析
All of us can give others a hand as long as we are willing to do so. Actually, there are some people doing kind things all the time. Spreading kindness, one good deed at a time, is Karla Gibson’s mission. “I wish everyone could join me. There are so many ____ things going on in the world; I mean every day,” said Karla.
Karla had the ____ and sense of duty in December of 2013. The single mother of three said she tended to feel depressed around the holidays, so she ____ to do something to cheer others up. She started a Facebook page and ____ her good deeds each day, from feeding the homeless to giving Easter gifts to the incarcerated (囚犯). She hoped to ____ others.
“We have to do something. Our ____ can make a difference in someone’s day. You ____ know when someone might be having their worst day, and then something like buying them a coffee can change their whole attitude,” Karla ____.
Karla’s greatest ____ so far had to do with coffee. On September 27th, Karla’s birthday, she went to her local Starbucks and gave the ____ $127 to pay for other people’s drinks. She sat at the end of the drive-through holding a ____ that read, “Have a great day.” She ended up ____ about 23 customers. “It was really fun. It was ____ one of the best birthdays ever.” she said. Her kindness that day didn’t go ____. One couple was so grateful that they surprised her with flowers and balloons to show their ____.
Karla’s acts of kindness have become a ____ affair. Her two sons are always ____ others. “Sometimes I’ll ask Kyle, ‘So, did you do anything extra nice today?’ and his answers are like ‘Somebody ____ something in the hallway and I picked it up’ or ‘I held the door for someone’, that kind of thing,” said Karla.
It’s because of Mom that the boys think it’s ____ to give a hand to others. “I think it’s a great idea of hers. It’s always nice to help someone out ____ they really need it,” said Karla’s 15-year-old son Chad.
1.A.good B.bad C.new D.casual
2.A.commitment B.appointment C.preference D.success
3.A.managed B.agreed C.hesitated D.decided
4.A.did B.mentioned C.shared D.missed
5.A.greet B.inspire C.introduce D.remember
6.A.kindness B.happiness C.stories D.sadness
7.A.still B.often C.never D.even
8.A.whispered B.explained C.reported D.replied
9.A.surprise B.challenge C.concern D.moment
10.A.cashier B.customer C.beggar D.secretary
11.A.mark B.sign C.symbol D.flag
12.A.paying for B.picking up C.paying off D.picking out
13.A.occasionally B.usually C.probably D.hardly
14.A.unoccupied B.unnoticed C.unorganized D.unquestioned
15.A.wisdom B.existence C.generosity D.appreciation
16.A.society B.love C.holiday D.family
17.A.encouraging B.inviting C.helping D.affecting
18.A.dropped B.bought C.found D.fell
19.A.strange B.lucky C.cool D.funny
20.A.after B.though C.unless D.when
高二英语完形填空困难题查看答案及解析
As we all know, the Internet will let people have ____________to huge amounts of information from their own homes.
| A．entrance | B．way | C．means | D．access |
高二英语单项填空中等难度题查看答案及解析
As is known to us all, baths and bathing have long been considered of medical importance to man. In Greece there are the ruins of a water system for baths built over 3,000 years ago. The Romans had warm public baths. In some baths, as many 3,000 persons could bathe at the same time.
Treating disease by taking bathing has been popular for centuries. Modern medical bathing first became popular in Europe and by the late 1700’s has also become popular in the United States.
For many years frequent(经常的) bathing was believed to be bad for one’s health. Ordinary bathing just to keep clean was avoided, and perfume was often used to cover up body smells!
By the 1700’s doctors began to say that soap and water were good for health. They believed that it was good for people to be clean. Slowly, people began to bathe more frequently. During the Victorian Age of the late 19th century, taking a bath on Saturday night became common.
In the United States ordinary bathing was slow to become popular. During the 18th and early 19th centuries, many Americans were known as “The Great Unwashed!” In one American city, for example, a person was only allowed to take a bathe every thirty days! That was a law!
Frequency of bathing today is partly a matter of habit. People know that bathing for cleanliness is important to health, Doctors know that dirty bodies increase the chance of diseases. As a result, in the United States, people generally bathe often. Some people bath once a day at least. They consider a daily bath essential (="necessary)" to good health.
1. A water system for baths was built by _________ over 3,000 years ago.
A．the Greeks B．the Romans C．the Americans D．the Europeans
2.In the 18th century doctors believed that being clean was __________.
A．good for health B．unimportant C．harmful D．important
3.The underlined word perfume probably means _____________.
A．a strange smelling substance B．good health
C．a sweet smelling substance D．large wealth
4.Which of the following gives the main idea of the passage?
A．Everybody inAmericatakes a daily bath.
B．A bath a day keeps the doctor away.
C．Bathing has become easier and cheaper.
D．Taking baths has become popular in the world.
高二英语阅读理解中等难度题查看答案及解析
The medical reform in that country proved to be _____ failure, but as we know, success often comes after _____ failure．
A． a; the B． a; / C． a; a D． /; /
高二英语单项填空中等难度题查看答案及解析
The medical reform in that country turns out to be ______ failure, but as we know, success often comes after ______ failure.
A. a; the B. a; 不填 C. a; a D. 不填; 不填
高二英语单项填空简单题查看答案及解析