2020年职称英语考试《综合类》考试共65题，分为单选题。小编每天为您准备了5道每日一练题目（附答案解析），一步一步陪你备考，每一次练习的成功，都会淋漓尽致的反映在分数上。一起加油前行。

1、What Is the Coolest Gas in the Universe?
What is the coldest air temperature ever recorded on the Earth? Where was this low temperature recorded? The coldest recorded temperature on Earth was -91℃ which _____ in Antarctica in 1983.
We encounter an interesting situation when we discuss temperatures in space Temperatures in Earth orbit actually range from about +120℃ to -120℃. The temperature depends upon whether you are in direct sunlight or shade, Obviously, -120℃ is colder than our body can safely endure. Thank NASA science for well-designed space suits that protect astronauts from these temperature extremes.
The space temperatures just discussed affect only our area of the solar system . Obviously, it is hotter closer to the Sun and colder as we travel away from the Sun. Astronomers estimate temperatures at Pluto are about -210℃. How cold is the lowest estimated temperature in the entire universe? Again, it depends upon your location. We are taught it is supposedly impossible to have a temperature below absolute zero, which is -273℃, at which atoms do not move. Two scientists, whose names are Cornell and Wieman, have successfully cooled down a gas temperature barely above absolute zero. They won a Nobel Prize in Physics in 2001 for their work not a discovery in this car.
Why is the two scientists' work so important to science?
In the 1920s, Satyendra Nath Bose was studying an interesting theory about particles we now call photons. Bose had trouble convincing Other scientists to believe so he contacted Albert Einstein. Einstein's calculations helped him theorize would behave as Bose thought but only at very cold temperatures.
Scientists have also discovered that ultra-cold atoms can help them make the world's atomic clocks even more accurate. These clocks are so accurate today they would only lose one second every six million years! Such accuracy will help us travel in space because distance is velocity times time(d=vxt). With the long distances involved in space travel to know time as accurately as possible to get accurate distance.
【单选题】

A.opened

B.occurred

C.opposed'

D.operated

正确答案:B

答案解析:本段叙述地球上记录到的最低温度是-91℃，本段最后一句的后半句显然是交代这一最低温度是在南极洲出现的，所以occurred（发生、出现）是正确的选择。其他三个选项的词义与上下文的意思相去甚远。

2、An Early Form of Jazz Music
Music comes in many forms; most countries have a style of their own. At the turn of the last century, when jazz was born, America had no prominent music 0f its own. No one knows exactly when was invented or by whom. But it began to be heard in the early 1890s. Jazz is America's contribution to ____ music. In contrast to classical music, which follows formal European traditions, jazz is spontaneous and free in form. It bubbles with energy, expressing the moods, interests, and emotions of the people. In the 1920s' jazz sounded like America. And so it does today. The origins 0f the music are as interesting as the music itself. American Negroes, or blacks, as they are called today, were the jazz pioneers. They were brought to the Southern states as slaves. They were sold to plantation owners and forced to work long hours. When a Negro died, his friends and relatives formed a procession to carry to body to the cemetery. In New Orleans, a band often accompanied the body . On the way to the cemetery the band played slow, solemn music, suited to the occasion. Furthermore 0n the way home the mood changed. Spirits lifted. Death had removed one of their numbers, but the living were glad to be alive . The band played happy music, improvising on both the harmony and the melody of the tunes played at the funeral. This music made everyone want to dance. It was an early form ofjazz.
【单选题】

A.classical

B.sacred

C.popular

D.serious

正确答案:C

答案解析:爵士乐不属于古典音乐，也不属于严肃音乐或圣乐，只可能是流行音乐。

3、How to Be a Successful Business person
Have you ever wondered why some people are successful in business and others are not? Here's a story about one successful business person. He started out washing dishes and today he owns 168 restaurants.
Zubair Kazi was born in Bhatkal, a small town in southwest India. His dream was to be an airplane pilot, and when he was 16 years old, he learned to fly a small plane.
At the age of 23 and with just a little money in his pocket, Mr. Kazi moved to the United States. He hoped to get a job in the airplane industry in California. Instead, he ended up working for a company that rented cars.
While Mr. Kazi was working at the car rental (租赁的) company, he frequently ate at a nearby KFC restaurant. To save money on food, he decided to get a job with KFC. For two months, he worked as a cook's assistant. His job was to clean the kitchen and help the cook. "I didn't like it," Mr. Kazi says, "but I always did the best I could."
One day, Mr. Kazi's two co - workers failed to come to work. That day, Mr. Kazi did the work of all three people in the kitchen. This really impressed the owners of the restaurant.
A few months later, the owners needed a manager for a new restaurant. They gave the job to Mr. Kazi. He worked hard as the manager and soon the restaurant was making a profit.
A few years later, Mr. Kazi heard about a restaurant that was losing money. The restaurant was dirty inside and the food was terrible. Mr. Kazi borrowed money from a bank and bought the restaurant. For the first six months, Mr. Kazi worked in the restaurant from 8 A.m. to 10 p. m., seven days a week. He and his wife cleaned up the restaurant, remodeled the front of the building, and improved the cooking. They also tried hard to please the customers. If someone had to wait more than ten minutes for their food, Mrs. Kazi gave them a free soda. Before long the restaurant was making a profit.
A year later, Mr. Kazi sold his restaurant for a profit. With the money he earned, he bought three more restaurants that were losing money. Again, he cleaned them up, improved the food, and retrained the employees. Before long these restaurants were making a profit, too.
Today Mr. Kazi owns 168 restaurants, but he isn't planning to stop there. He's looking for more poorly managed restaurants to buy. "I love it when I go to buy a restaurant and find it's a mess," Mr. Kazi says. "The only way it can go is up."
When Mr. Kazi was young, his dream was to ____.【单选题】

A.be an airplane pilot

B.sell cars

C.own a restaurant

D.become a good cook

正确答案:A

答案解析:本题难度不大，是送分题，答案依据是这一句：His dream was to be an airplane pilot, and when he was 16 years old, he learned to fly a small plane.

4、A Carrot a Day Keeps Cancer Away
Among all the malignancies, lung cancer is the biggest killer: more than 100,000 Americans a year die of the disease. Giving up smoking is one of obvious way to reduce the risk, but another answer may lie in the kitchen. According to a new report, even heavy smokers may be protected from developing lung cancer by a simple dietary measure: a daily portion of carrots, spinach or any other vegetable or fruit containing a form of vitamin A called carotene.
The finding, published in the British medical journal The Lancet, is part of a long-range investigation of diet and disease. Since 1957 a team of American researchers has monitored the dietary habits and medical histories of 2,000 middle-aged men employed by the Western Electric Co. in Chicago. Led by Dr. Richard Shelelle of Chicago's Rush-Presbyterian, St. Luke's Medical Center, the researchers recently began to sort out the links between the subjects' dietary patterns and cancer. Other studies of animals and humans have suggested that vitamin A offers some protection against lung cancer. The correlation seemed logical, since vitamin A is essential for the growth of the epithelial (上皮的) tissue that lines the airways of the lungs.
Vegetables: But the earlier research did not distinguish between two different forms of the vitamin. "Preformed" vitamin A, known as retinol, is found mainly in liver and dairy products like milk, cheese, butter and eggs. But vitamin A is also made in the body from carotene, which is abundant in a variety of vegetables and fruits, including carrots, spinach, squash, tomatoes, sweet potatoes and apples.
In the Western Electric study, Shekelle and his colleagues found little correlation between the incidence of lung cancer and the consumption of foods containing preformed vitamin A, but when they examined the data on carotene intake, they discovered a significant relationship. Among the488 men who had the lowest level of carotene consumption, there were fourteen cases of lung cancer, in a group of the same size that ate the most carotene, only two cases developed. The apparent protective effect of carotene held up even for longtime smokers but to a lesser degree.
Further studies will be necessary before the link between lung cancer and carotene can be firmly established. In the meantime, researchers warn against taking large numbers of vitamin A pills, because the tablets contain a form of the chemical that can be extremely toxic in high doses. Instead, they advise a well-balance diet that includes foods rich in carotene. For a smoker, a half-cup of carrots every day might possibly make the difference between life and death.
Why did Dr. Shelelle think the correlation between vitamin A and lung cancer protection was logical?【单选题】

A.Vitamin A causes lung cancer.

B.Vitamin A cures lung cancer.

C.Vitamin A is necessary for the growth of the tissue lining the lungs.

D.Vitamin A is a molecule that prevents smoke from being inhaled.

正确答案:C

答案解析:根据第2段最后一句，“这种关系符合逻辑，因为维生素A对于排列在肺部呼吸通道的上皮组织结构的生长是必不可少的”。

5、U. S. to Start $3. 2 Billion Child Health Study in January
A study that will cost $3. 2 billion and last more than two decades to track the health of100,000 U. S. children from before birth to age 21 will be launched in January, U. S. health officials said on Friday.
Officials from the U. S. government's National Institutes of Health said they hope the study, to be conducted at 105 locations throughout the United States, can help identify early-life influences that affect later development, with the goal of learning new ways to treat or prevent illness.
The study will examine hereditary and environmental factors such as exposure to certain chemicals that affect health.
Researchers will collect genetic and biological samples from people in the study as well as samples from the homes of the women and their babies including air, water, dust and materials used to construct their residences, the NIH said.
Officials said more than $200 million has been spent already and the study is projected to cost$3. 2 billion.
"We anticipate that in the long term , what we learn from the study will result in a significant savings in the nation's health care costs," Dr. Duane Alexander, who heads the NIH's Eunice Kennedy Shriver National Institute of Child Health and Human Development, told reporters.
The study will begin in January when the University of North Carolina and the Mount Sinai School of Medicine in New York start signing up pregnant women whose babies will then be followed to age 21.
Some of the early findings will be about factors behind pre-term birth, which has become more common in recent years, according to Dr. Peter Scheid of the NIH, who heads the study.
The people taking part will be from rural, urban and suburban areas, from all income and educational levels and from all racial groups, the NIH said.
The babies of the participants will be followed____.
【单选题】

A.throughout their lives.

B.for more than two decades.

C.from birth to 21 months.

D.until they get married.

正确答案:B

答案解析:短文的第1段以及倒数第3段都说到，这些婴儿将从出生前一直被跟踪到21岁。