[题目]Too many private cars got out and traveled high speed, causing a lot of traffic accidents on the highway during the holidays.A. to B. at C. for D. in 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】Too many private cars got out and traveled __________ high speed, causing a lot of traffic accidents on the highway during the holidays.

A. to B. at

C. for D. in

【答案】B

【解析】句意:太多的私家车辆上路并高速行驶,在节假日期间的高速公路上造成许多的交通事故。at high speed以髙速行驶。

练习册系列答案

相关题目

【题目】It is typical of Jim to feel shy; he will feel ______ in the presence of strangers.

A. out of order B. out of place

C. out of control D. out of breath

【题目】Doctors sometimes use light therapy to treat a form of depression in people who get too little morning sun. But too much light at other times may actually cause such mood disorder. Long-lasting exposure to light at night brings depression, a new study finds, at least in animals.

The new data confirm observations from studies of people who work night shifts, says Richard Stevens of the University of Connecticut Health Center. Mood disorders join a growing list of problems, including cancer, obesity and diabetes that can occur when light throws life out of balance by disturbing the biological clock and its timing of daily rhythms.

In the new study, Tracy Bedrosian and Randy Nelson of Ohio State University exposed mice to normal light and dark cycles for four weeks. For the next four weeks, half of the mice remained on this schedule, and the rest received continuous dim light throughout their night. Compared with mice exposed to normal night-time darkness, those getting dim light at night lost their strong preference for sweet drinks. “A sign that they no longer get pleasure out of activities they once enjoyed,” Bedrosian says.

In a second test, mice were clocked on how long they actively tried to escape a pool of water. Those exposed to night lights stopped struggling and just floated in the water, a sign of “behavioral despair”, 10 times as long as the mice that had experienced normal night-time darkness. All symptoms of depression disappeared within two weeks of the mice returning to a normal light-dark cycle, the researchers report. The scientists could also quash the behavioral symptoms by injecting the brains of animals with a drug that prohibits the activity of certain molecules linked with human depression. This finding further suggests that light at night may cause something related to depression.

Human studies linking night-time light and mood disorders are important but can not easily detect molecular underpinnings(分子基础) as animal studies can, says George Brainard of Thomas Jefferson University. The new work, he says, suggests that the change of the biological clock by light at night can be “an extremely powerful force in regulating biology and behavior”.

【1】After being exposed to continuous night-time light, the mice __________.

A. changed their preferences

B. escaped from the water more eagerly

C. remained active as before

D. showed less interest in their favorites

【2】What does the underlined word “quash” in paragraph 4 probably mean?

A. study B. predict

C. ease D. cause

【3】We can learn from the last paragraph that _______________.

A. light at night may have practical value

B. the biological clock is beneficial to humans

C. human mood disorders cannot be healed easily

D. human studies are more important than animal studies

【4】What is the main idea of the passage?

A. Night-time light may cause depression.

B. A drug has been found to cure mood disorders.

C. The study on animals can be applied to humans.

D. Human biological clock can be controlled by light.

【题目】 The variety of food at the restaurant is limited, but every meal can serve at least two people and is under 10, so not only is it __________ but practical as well.

A. adaptable B. affordable

C. changeable D. adjustable

【题目】 As we have seen, the focus of medical care in our society has been __________ from curing diseases to preventing diseases—especially in terms of changing our many unhealthy behaviors.

A. confirming B. committing

C. shifting D. concluding

【题目】School children must be taught how to deal with dangerous ______ .

A. states B. conditions

C. situations D. positions

【题目】Finally, I made the choice to withdraw from college to care for my grandma __________ the fact that she had developed cancer.

A. In favor of B. in possession of

C. in view of D. in charge of

【题目】Mr. Brozina is a single father and an elementary school librarian who reads aloud for a living. When his daughter, Kristen, hit fourth grade, he proposed The Streak： to see if they could read together for 100 straight bedtimes without missing once.

When The Streak reached 100, they celebrated with a pancake breakfast, and Kristen whispered， "I think we should try for 1,000 nights."

Mr. Brozina was delighted, but what he was thinking was, a thousand nights? ！ "I thought, we'll never do it，" he recalled. "And then we got to 1,000, and we said, ‘How can we stop? ’"

For 3, 218 nights (and some mornings, if Mr. Brozina was coming home too late to read) ，The Streak went on. It progressed from picture books to middle-school classics to Harry Potter, Agatha Christie, Dickens and Shakespeare，continuing on, until Kristen's first day of college.

In those nine-plus years, they survived many close calls. When Kristen was still in elementary school，her father went to Washington. "The phone rang at 10:45 at the hotel and it was Kristen," Mr. Brozina recalled. "She said, ‘ Dad, we forgot The Streak！’ Fortunately, I always traveled with several books and we read right then and there."

This spring, Kristen graduated from Rowan University. She has performed as you'd expect for a product of The Streak，an English major with a 3. 94 average. She also won two national writing contests ，was an editor of the humor arid literary publications and won the annual English department award.

【1】According to the passage, Mr. Brozina and his daughter read together for ______ .

A. 100 bedtimes

B. 1，000 nights

C. over nine years

D. nearly 3,000 nights and some mornings

【2】 In the passage, the underlined phrase "The Streak" in Paragraph 1 probably means ______ .

A. the period of time for reading together

B. the children's book

C. the special night

D. the school work

【3】 How has Kristen benefited from reading with her father?

A. She has grown closer to her father.

B. She has become a school librarian herself.

C. She has performed well at university.

D. She has won many reading awards.

【4】 This passage is about a father who ______ .

A. is very strict in his work

B. enjoys reading when travelling

C. makes his daughter love reading

D. has a hard time bringing up his daughter

【题目】Although nuclear power may lead to disasters, ______ the nuclear power industry has been operating safely for three decades in China.

A. and B. but C. so D. yet

试题分类