职称英语理工类试题每日一练

单项选择题
1、 In the situation comedy, a traditional format for television shows, the same characters appear repeatedly in humorous episodes.
A．respectively
B．again and again
C．simultaneously
D．briefly
2、 She persevered in her ideas despite obvious objections raised by friends.
A．persisteD
B．insisted
C．resisted
D．suggested
3、 I asked her if she would allow me to interview her, and she readily agreed.
A．willingly
B．suddenly
C．firmly
D．quickly
4、 The excitement of hunting big game in Africa has been a lure to Europeans for 200 years.
A．error
B．function
C．attraction
D．miracle
5、The contempt he felt for his fellow students WaS obvious． 
A．need
B．Iove
C．hate
D．Pity 
6、 The President made a brief visit to Beijing.
A．short
B．working
C．formal
D．secret
7、

The United States has historically had higher rates of marriage than those of other industrialized countries. The current annual marriage51in the United States-about 9 new marriages for every 1,000 people-is 52 higher than it is in other industrialized countries. However, marriage is53as widespread as it was several decades ago.54of American adults who are married55from 72 percent in 1970 to 60 percent in 2002. This does not mean that large numbers of people will remain unmarried56their lives. Throughout the 20th century, about 90 percent of Americans married at some 57in their lives. Experts58that about the same proportion of today's young adults will eventually marry.
The timing of marriage has varied59over the past century. In 1995 the average age of women in the United States at the time of their first marriage was 25. The average age of men was about 27. Men and women in the United States marry for the first time at an average of five years later than people did in the 1950s.60, young adults of the 1950s married younger than did any previous61in U. S. history. Today's later age of marriage is62the age of marriage between 1890 and 1940. Moreover, a greater proportion of the population was married (95 percent) during the 1950s than at any time before63. Experts do not agree on why the "marriage rush" of the late 1940s and 1950s occurred, but most social scientists believe it represented a64to the return of peaceful life and prosperity after 15 years of severe economic 65and war.
第51题应选：
A．rate
B．ratio
C．percentage
D．poll
8、 This poem depicts the beautiful scenery of a town in the South．
A．praises
B．writes
C．describes
D．Imitates
9、

A New Strategy to Overcome Breast Cancer

根据以下材料回答题：
Post-menopausal ( 绝经后 ) women who walk for an hour a day can cut their chance of breast cancer significantly, a study has suggested. The report, which followed 73,000 women for 17 years, found walking for at least seven hours a week lowered the risk of the disease. The American Cancer Society team said this was the first time reduced risk was specifically linked to walking. UK experts said it was more evidence that lifestyle influenced cancer risk.
A recent poll for the charity Ramblers a quarter of adults walk for no more than an hour a week, but being active is known to reduce the risk of a number of cancers. This study, published in Cancer Epidemiology, Biomarkers & Prevention, followed 73.615 women out of 97,785 aged 50-74 who had been recruited by the American Cancer Society between 1992 and 1993, so it could monitor the incidence of cancer in the group.
They were asked to complete questionnaires on their health and on how much time they were active and participating in activities such as walking, swimming and aerobics ( 有氧运动 ) and how much time they spent sitting watching television or reading. They completed the same questionnaires at two-year intervals between 1997 and 2009. Of the women, 47% said walking was their only recreational activity. Those who walked for at least seven hours per week had a 14% lower risk of breast cancer compared to those who walked three or fewer hours per week.
Dr. Alpa Patel, a senior epidemiologist at the American Cancer Society in Atlanta, Georgia, who led the study, said: "Given that more than 60% of women report some daily walking, promoting walking as a healthy leisure-time activity could be an effective strategy for increasing physical activity amongst post-menopausal women. We were pleased to find that without any other recreational activity, just walking one hour a day was associated with a lower risk of breast cancer in these women." "More strenuous ( 紧张的) and longer activities lowered the risk even more."
Baroness Delyth Morgan, chief executive of Breast Cancer Campaign, said: "This study adds further evidence that our lifestyle choices can play a part in influencing the risk of breast cancer and even small changes incorporate into our normal day-to-day activity can make a difference."
She added: "We know that the best weapon to overcoming breast cancer is the ability to stop it occurring in the first place. The challenge now is how we turn these findings into action and identify other sustainable lifestyle changes that will help us prevent breast cancer."
All of the following factors relating to cancer risk were mentioned in the passage EXCEPT__________
A．regular walking
B．breathing exercise
C．recreational activity
D．lifestyle choices
10、

The Northern Lights

根据以下材料回答题：
The sun is stormy and has its own kind of weather. It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check! Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma, and the stream of plasma coming from the Sun is called the solar wind. The more active the Snn, the stronger the solar wind.
The solar wind constantly streams toward the Earth, but don't worry because a protective magnetic fields surrounds our planet. The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles. The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field first gets squeezed and then the magnetic field lines break and reconnect.
The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles. As the electrons fall into the Earth, they collide with gas molecules in the atmosphere, creating flashes of light in the sky.
Each atmospheric gas glows a different color, Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky, they create the Northern Lights and the Southern Lights.
Watching auroras ( 北极光 ) is fun and exciting, but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate ( 跳动) , flicker (闪烁 ) , or even move like waves. During solar maximum, 5 auroras are seen as far south as Florida, even Mexico! Auroras often seem to be very close to the ground, but the lowest aurora is still about 100 kilometers above the ground, a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long, a few hundred kilometers high, but only a few hundred meters thick.
We hope you are able to travel to far-north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!
The solar wind comes into being as a result of__________
A．fast flow of energy away from the Sun
B．disappearance of the Sun's gravity
C．unpredictable weather of the Sun
D．a stream of particles being blown away