2022职称英语理工类B级阅读理解专项练习

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　　在各领域中，我们总免不了要接触或使用练习题，通过这些形形色色的习题，使得我们得以有机会认识事物的方方面面，认识概括化图式多样化的具体变式，从而使我们对原理和规律的认识更加的深入。那么你知道什么样的习题才能有效帮助到我们吗？下面是小编为大家收集的2022职称英语理工类B级阅读理解专项练习，欢迎阅读与收藏。

2022职称英语理工类B级阅读理解专项练习

　　职称英语理工类B级阅读理解专项练习篇1

　　The Russian Mir Space Station, which came down in 2001 at last after 15 years of pioneering the concept of long-term human space flight, is remembered for its accomplishments in the human space flight history. It can be credited with many firsts in space.

　　During Mir's lifetime, Russia spent about US$4.2 billion to build and maintain the station.

　　The Soviet Union launched Mir, which was designed to last from three to five years, on February 20, 1986, and housed 104 astronauts over 12 years and seven months, most of whom were not Russian. In fact, it became the first international space station by playing host to 62 people from 11 countries. From 1995 through 1998, seven astronauts from the United States took turns living on Mir for up to six months each. They were among the 37 Americans who visited the station during nine stopovers by space shuttles.

　　The more than 400 million the United States provided Russian for the visits not only kept Mir operating, but also gave the Americans and their partners in the international station project valuable experience in long-term flight and multinational operations.

　　A debate continues over Mir’s contributions to science. During its existence, Mir was the laboratory for 23,000 experiments and carried scientific equipment, estimated to be worth $80 million, from many nations. Experiments on Mir are credited with a range of findings, from the first solid measurement of the ration of heavy helium atoms in space to how to grow wheat in space. But for those favouring human space exploration, Mir showed that people could live and work in space long enough for a trip to Mars. The longest single stay in space is the 437. 7 days that Russian astronaut Valery Polyakov spent on Mir from 1994 to 1995. And Sergie Avdeyev accumulated 747.6 days in space in three trips to the space station. The longest American stay was that of Shannon Lucid, who spent 188 days aboard Mir in 1996.

　　Despite the many firsts Mir accomplished, 1997 was a bad year out of 15 for Mir. In 1997, an oxygen generator caught fire. Later, the main computer system broke down, causing the station to drift several times and there were power failures.

　　Most of these problems were repaired, with American help and suppliers, but Mir's reputation as a space station was ruined.

　　Mir’s setbacks are nothing, though, when we compare them with its accomplishments. Mire was a tremendous success, which will be remembered as a milestone in space exploration and the space station that showed long-term human habitation in space was possible. But it's time to move on to the next generation. The International Space Station being built will be better, but it owes a great debt to Mir.

　　31. What can we learn from the passage that the Mir Space Station

　　A. was designed to last 5 years.

　　B. was built by Russians.

　　C. played nost to 7 astronauts from different countries.

　　D. was visited only by Americans.

　　32. One of the contributions Mir makes to science is that it

　　A. helps astronauts get close to Mars.

　　B. enables scientists to develop new scientific equipment.

　　C. sets a record of the longest single human stay in space.

　　D. shows that multinational operations in space are less expensive.

　　33. What happened to Mir in 1997?

　　A. It ran out of its fund.

　　B. It was completely damage by fire.

　　C. Its main computer system broke down.

　　D. Its reputation was ruined due to power failures.

　　34. It can be inferred from the last paragraph that

　　A. space exploration will not experience setbacks.

　　B. it is difficult for other space stations to exceed Mir’s success.

　　C. Mir is the best long-term human habitation in space in history.

　　D. multinational space operations are getting more accomplishments.

　　35.What is the author’s attitude toward Mir?

　　A. Favorable.

　　B. Indifferent.

　　C. Ironic.

　　D. Negative.

　　参考答案：

　　31. A. was designed to last 5 years.

　　32. C. sets a record of the longest single human stay in space.

　　33. C. Its main computer system broke down.

　　34. D. multinational space operations are getting more accomplishments.

　　35. A. Favorable.

　　职称英语理工类B级阅读理解专项练习篇2

　　Where Have All the Bees Gone? Scientists who study insects have a real mystery on their hands. All across the country, honeybees are leaving their hives and never returning. Researchers call this phenomenon colony-collapse1 disorder. According to surveys of beekeepers across the country, 25 to 40 percent of the honeybees in the United States have vanished from their hives since last fall. So far, no one can explain why. Now, a group of scientists and beekeepers have teamed up to try to figure out whats causing the alarming collapse of so many colonies. By sharing their expertise in honeybee behavior, health, and nutrition, team members hope to find out whats contributing to the decline and to prevent bee disappearances in the future. Another cause of colony-collapse disorder may be certain chemicals that farmers apply to kill unwanted insects on crops, says Jerry Hayes, chief bee inspector for the Florida Department of Agriculture3. Some studies, he says, suggest that a certain type of insecticide affects the honeybees nervous system and memory. It seems like honeybees are going out and getting confused about where to go and what to do, he says.

　　词汇： hive n. 蜂巢; 蜂箱 digestive adj. 消化的 beekeeper n. 养蜂人 insecticide n. 杀虫剂注释： 2.the United States Department of Agriculture Bee Research Laboratory：美国农业部蜜蜂研究实验室。

　　练习：

　　A) Honeybees are flying all across the country.

　　C) Honeybees are leaving their hives and do not return.

　　2. Why are researchers seriously concerned with the phenomenon of colony-collapse disorder? A) Worsening environment.

　　B) Because honeybees feed on flowers.

　　C) Dwindling number of flowers around.

　　D) Both B and C.

　　职称英语理工类B级阅读理解专项练习篇3

　　Experiments under way in several labs aim to create beneficial types of genetically modified (GM) foods, including starchier potatoes and caffeine-free coffee beans. Genetic engineers are even trying to transfer genes from a cold-winter fish to make a frost-resistant tomato.

　　A low-sugar GM strawberry now in the works might one day allow people with health problems such as diabetes to enjoy the little delicious red fruits again. GM beans and grains supercharged with protein might help people at risk of developing kwashiorkor. Kwashiorkor, a disease caused by severe lack of protein, is common in parts of the world where there are severe food shortages.

　　Commenting on GM foods, Jonathon Jones, a British researcher, said: "The future benefits will be enormous, and the best is yet to come".

　　To some people, GM foods are no different from unmodified foods. "A tomato is a tomato," said Brian Sansoni, an American food manufacturer.

　　Critics of GM foods challenge Sansoni’s opinion. They worry about the harm that GM crops might do to people, other animals, and plants.

　　In a recent lab study conducted at Cornell University, scientists tested pollen made by Bt corn, which makes up one-fourth of the U.S. corn crop. The scientist sprinkled the pollen onto milkweed, a plant that makes a milky juice and is the only known food source of the monarch butterfly caterpillar. Within four days of munching on the milkweed leaves, almost half of a test group of caterpillars had died. "Monarchs are considered to be a flagship species for conservation." said Cornell researcher Linda Raynor. "This is a warning bell."

　　Some insects that are not killed by GM foods might find themselves made stronger. How so? The insecticides used to protect most of today’s crops are sprayed on the crops when needed and decay quickly in the environment. But GM plants produce a continuous level of insecticide. Insect species feeding on those crops may develop resistance to the plants and could do so in a hurry, say the critics. Insects may also develop a resistance to the insecticide Bt.

　　At the forum on GM food held last year in Canada. GM crops that have been made resistant to the herbicide might crossbreed with wild plants, creating "superweeds" that could take over whole fields.

　　So where do you stand? Should GM food be banned in the United States, as they are in parts of Europe? Or do their benefits outweigh any of the risks they might carry?

　　1. Paragraphs 1,2&3 tries to give the idea that

　　A) GM foods may bring about great benefits to humans.

　　B) We cannot recognize the benefits of GM foods too early.

　　C) GM foods may have both benefits and harm.

　　D) GM foods are particularly good to the kwashiorkor patients.

　　2. Why is the case of the pollen-sprayed milkweed citied in Paragraph 6?

　　A) It is cited to show GM foods can kill insects effectively.

　　B) It is cited to show GM foods contain more protein.

　　C) It is cited to show GM foods also have a dark side.

　　D) It is cited to show GM foods may harm crops.

　　3. What happens to those insects when not killed by the spray of insecticide?

　　A) They may lose their ability to produce offspring.