. The year 2003 ____ a wild spread of SARS, a...

. The year 2003 ____ a wild spread of SARS, a disease people knew little about at that time.

高三英语单项填空简单题查看答案及解析

语法填空

When people hear the word ''rat'', they may think of dirty animals that spread disease. And if you are an English learner, you may also connect the word ''rat'' with bad 1. (express). For example, calling someone a ''rat'' is 2. big insult and ''rat race'' describes a joyless, hurried way of living. So rats 3. (general) are not beloved animals either in life or the English language. But the rat trainers at the nonprofit organization, APOPO, see the animals very differently.

Based on Tanzania, APOPO trains giant rats 4. (find) landmines. Humans 5. (use) metal-searching devices to do this work for years. But rats--- it turns out--- do it better. And they also cost 6. (little) money. APOPO estimates that worldwide there are 110 million 7. (hide) explosives (爆炸物) left over from wars. These explosives are still ''live'', or able to explode. The work that APOPO does is really important in spreading the fact 8. rats are not just a pest. They really are 9. (hero) and they show us every day that they are worthy 10. that name.

高三英语语法填空中等难度题查看答案及解析

For almost 500 years, people have wondered what deadly disease wiped out most of the Aztecs (阿芝特克人）. The locals called it cocolizthi, and now a team of scientists think they know exactly what that was. The outbreak is considered to be one of the deadliest epidemics (传染病）in human history. For centuries, its cause has been debated by historians. New evidence suggests that the Aztecs died from a type of bacteria called salmonella enterica.

An international team of scientists came to this conclusion after analysing the skeletons (骨骼) of 29 Aztecs buried in a cocoliztli cemetery in the Oaxaca region of Mexico. The scientists obtained samples from the teeth of ten of the skeletons. They compared these with their database of bacteria and found traces of salmonella enterica.

Salmonella enterica can cause enteric fever, of which typhoid (伤寒）is a type. Today, there are around 21 million cases of typhoid worldwide and it is considered a global threat.

The Aztecs were fierce hunter-gatherers who settled in what is now Mexico at the beginning of the 13th century. From their incredible capital city Tenochtitlan(now Mexico City),the Aztecs fought wars with other tribes until they ruled much of the region.

The Aztecs ended up controlling large parts of Mesoamerica--now much of Mexico and Central America--until Spanish explorers arrived in 1519 and brought with them advanced weapons and deadly diseases. The team believe that the domesticated animals, such as goats and horses, which the explorers brought with them carried the deadly bacteria.

By 1545,not even 30 years after the Spanish had arrived, Mexico's Aztec nation started coming down with a terrible illness. Symptoms included high fever, headaches and bleeding from the eyes, nose and mouth. Within five years, up to 15 million people---more than 80%of the population at the time--had died from the mystery illness they called cocoliztli. The Aztec people had no immunity (免疫) to fight the disease.

“We cannot say with certainty that salmonella enterica was the cause of the cocolizti epidemic,” said Kirsten Bos from the Max Planck Institute for the Science of Human History in Germany.” We do believe that it should be considered a strong candidate."

1.Which helped the scientists come to the conclusion.

A.Certain traces of deadly diseases carried by goats and horses

B.Extensive comparison of Aztecs buried in a cocoliztli cemetery

C.Definite discoveries of infected tooth samples from the database

D.Small amounts of certain bacteria in the teeth of the skeletons

2.Which of the following is TRUE about the Aztecs?

A.They had a population of about 15 million around 1545.

B.Their livelihood depended on raising domesticated animals.

C.Their population dropped sharply in the middle 16th century.

D.They won the wars with the Spanish despite being poorly equipped.

3.The underlined word “it” in the last paragraph refers to_　　　

A.cocolizti epidemic B.salmonella enterica C.the typhoid D.the Max Planck Institute

4.The passage is mainly about

A.how the Aztecs got infected with salmonella enterica

B.why the Aztecs had no immunity to fight typhoid

C.which reason caused the Aztecs to abandon their native land

D.what led to the military and economic decline of the Aztecs

高三英语阅读理解中等难度题查看答案及解析

The disease malaria, which is spread by mosquitoes, kills over one million children yearly. ______, according to the United Nations, hunger and malnutrition claim ten million lives each year.

A. However               B. On the contrary         C. On top of this      D. As a result

高三英语单项填空中等难度题查看答案及解析

The president must have received the result of medical research by the time the disease spread widely, _______?

A.hasn’t he B.mustn’t he C.hadn’t he D.didn’t he

高三英语单项填空中等难度题查看答案及解析

A few years ago, SARS __31______ out in the mainland of China, causing some people __32________ (kill) or nearly got close to death. The situation was so severe that there was__33______ time to debate who is to blame. The most important thing for the government to do is to find out the __34________ of this deadly disease. They invited all the most __35_________ (experience) experts in this field to discuss and quite a few suggestions were put forward. Some of the top experts then tested them to see _36_______ they were available. Doctor Zhong Nanshan chose one patient who was seriously ill and had little hope__37_______ picking up and had the new medicine tested on him. __38______ his great joy, this patient recovered! He made his way to his office and telephoned the top official, __39_______ (tell) him this exciting news. For convenience, he moved to live in his office. His method did make sense. Not soon after that, the __40___ hospitals also controlled this terrible disease and kicked it out finally.

高三英语填空题简单题查看答案及解析

What a beautiful sight! Wild flowers of different colors spread all over the hills and around the lake, _______ to the beauty of the valley.

A. to add      B. being added     C. adding      D. added

高三英语单项填空中等难度题查看答案及解析

People in Nome all had diphtheria, a disease that spreads very fast. If ________, it would produce a powerful poison that would kill the patient.

A. untreating        B. to untreat        C. untreated         D. untreat

高三英语单项填空困难题查看答案及解析

Cancer is a terrible disease. Every year in the UK, more than 330,000 people get cancer, and doctors usually use a kind of therapy called radiotherapy to treat people. This treatment uses high energy X-rays to destroy the disease, but the effects of treatment can be nearly as bad as the cancer. As the X-rays destroy the cancer cells, they also damage healthy cells that are next to them. It’s like using a shotgun to kill an insect. When really important parts of a person’s body are hurt by the X-ray energy, it can have very bad results. It can also make more cancer grow in the damaged places in the future.

A new therapy that uses protons(质子) instead of X-ray energy could be the answer to the problem. In a project called PRaVDA, scientists from the UK and South Africa are working to this. If X-ray energy is like a shotgun, then protons can work more like a laser. Scientists can make protons travel through someone’s body without hurting them, and only damage the cancer.

The PRaVDA scientists use computers to make a 3-D model of the cancer cells to make sure the protons go to the right places. “It’s more accurate,” said Michaela Esposito, PhD, from the University of Lincoln.

Building this technology was very difficult, though. Professor Nigel Allinson from the University of Lincoln, the project leader, has put together a team of many different kinds of scientists with different skills. Those skills were all needed to make what he calls “one of the most complex” medical machines ever. It’s also 10 times more expensive than X-ray radiotherapy. Even so, Allinson believes that most cancer treatment will be done by protons in the future. “I think it will improve the quality of life of many cancer patients,” he says.

1.What point does the first paragraph make?

A. Cancer is a really terrible disease.

B. Lots of people get cancer every year in the UK.

C. Radiotherapy isn’t a perfect way to cure cancer.

D. Radiotherapy is a commonly used therapy against cancer.

2.What can be concluded about the new therapy?

A. It’s much cheaper than X-ray radiotherapy.

B. It depends on protons to locate the cancer cells.

C. Damaging the cancer by replacing X-rays with lasers is much more accurate.

D. It uses protons to damage the cancer cells without damaging healthy cells.

3.According to Professor Allinson, the new therapy ________.

A. will enable cancer patients to enjoy a better life

B. will cure most cancers in the future

C. will ensure that cancer patients live longer

D. will replace radiotherapy completely

4.What can be inferred from the text?

A. Science and technology are a double-edged sword.

B. Not every cancer patient will be able to afford proton therapy.

C. Radiotherapy is completely the wrong way to cure cancer.

D. The complex medical machine mentioned will soon be put into use.

高三英语阅读理解中等难度题查看答案及解析

The spread of Internet learning for huge numbers of people is leading some colleges to offer MOOCs, Massive Open Online Courses. Major universities like Stanford in California and Harvard in Massachusetts have invested millions of dollars to help launch MOOCs.

Those schools and others may have heard an attention-getting prediction. The man who created the MOOC service Udacity says that in fifty years, only ten traditional universities will remain in the world. That prediction came from Sebastian Thrun, a computer scientist probably best known for his part in making Google's driverless car. He is still a research professor at Stanford University. But he left his teaching position at Stanford to help start Udacity ,a provider of MOOCs.

Universities that fail to join the movement for MOOCs may be worried about their chances of survival. Colleges also hope to gain more students and cut operational costs in return for their investments.

Moody's Investor Service predicts that MOOCs will help large, famous universities gain more students. It says schools that create content for MOOCs can earn money by providing the course material to smaller schools.

But the investment service is warning that smaller, less well-known colleges may suffer because of MOOCs. It says students may want to receive certificates from major universities instead of attending a local junior college that provides traditional credits.

Recently, the University of Washington said it was the first American university to offer credit for MOOCs, credit that could be used toward a degree from the school.

One criticism of MOOCs has been that most courses being offered are in science, mathematics and technology. But several courses in literature are now available.

Professor Nelson says, "How much MOOCs will change college life is still up in the air. I have been of the opinion which is what universities will evolve to do is to still present some traditional classes, but that universities in some sense will be integrated."

1.Why do some major colleges join in providing MOOCs?

A.To make profits through Internet learning. B.To survive in the Information Age.

C.To offer help to other smaller colleges. D.To attract more investments.

2.What did Sebastian Thrun predict about future college life?

A.Many traditional universities will disappear.

B.Lectures will be given by Al rather than professors.

C.People don't have to receive education.

D.Traditional courses will be entirely replaced by MOOCs.

3.What used to be the disadvantage of MOOCs?

A.They were demanding for students. B.They were not friendly to students of arts.

C.They were not acknowledged by most colleges. D.They were expensive for students to use.

4.What can be inferred from the last paragraph ?

A.More traditional courses will be given in colleges.

B.Students from different universities will study together.

C.The impact of MOOCs on college life is not sure.

D.Professor Nelson is not in favor of MOOCs.

高三英语阅读理解简单题查看答案及解析