―Which type of car do you like better?― ．They are both expensive and high emission．A．None B．Either C．Neither D．Both 题目和参考答案——青夏教育精英家教网—

题目内容

―Which type of car do you like better?

― ．They are both expensive and high emission（高排量）．

A．None B．Either C．Neither D．Both

练习册系列答案

相关题目

Plants can’t communicate by moving or making sounds, as most animals do. Instead, plants Produce volatile compounds, chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from volatile compounds that the plant produces to attract insects such as Bugs and bees.

Plants can also detect volatile compounds produced by other plants. A tree under attack by Hungry insets, for instance, may give off volatile compounds that let other trees know about the Attack. In response, the other trees may send off chemicals to keep the bugs away ——or even Chemicals that attract the bugs’ natural enemies.

Now scientists have created a quick way to understand what plants are saying: a chemical Sensor（传感器）called an electronic nose. The “e-nose” can tell compounds that crop plants make When they’re attacked Scientists say the e-nose could help quickly detect whether plants are being Eaten by insects. But today the only way to detect such insects is to visually inspect individual Plants. This is a challenging task for managers of greenhouses, enclosed gardens than can house Thousands of plants.

The research team worked with an e-nose than recognizes volatile compounds. Inside the device, 13 sensors chemically react with volatile compounds Based on these interactions, the e-nose gives off electronic signals that the scientists analyze using computer software.

To test the nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all common greenhouse crops. Then scientists collected samples of air around damaged leaves from each type of crop, These plants had been damaged by insects, or by scientists who made holes in the leaves with a hole punch（打孔器）. The e-nose, it turns out, could identify healthy cucumber, pepper and tomato plants based on The volatile compounds they produce, It could also identify tomato leaves that had been damaged. But even more impressive, the device could tell which type of damage ---- by insects or with a hole Punch ---- had been done to the tomato leaves.

With some fine-tuning, a device like the e-nose could one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this could also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareva, a biochemist at Purdue University in West Lafayette, Ind. who studies smells of flowers and plants. Hopefully, scientists believe, the device could bring large benefits to greenhouse managers in the near future.

We learn from the text that plants communicate with each other by____.

A. making some sounds B. waving their leaves

C. producing some chemicals D. sending out electronic signals

What did the scientists do to find out if the e-nose worked?

A. They presented it with all common crops.

B. They fixed 13 sensors inside the device.

C. They collected different damaged leaves.

D. They made tests on damaged and healthy leaves.

According to the writer, the most amazing thing about the e-nose is that it can___.

A. pick out ripe fruits

B. spot the insects quickly

C. distinguish different damages to the leaves

D. recognize unhealthy tomato leaves

We can infer from the last paragraph that the e-nose_____.

A. is unable to tell the smell of flowers

B. is not yet used in greenhouses

C. is designed by scientists at Purdue

D. is helpful in killing harmful insects

Betty and Harold have been married for years. But one thing still puzzles（困扰） old Harold.

How is it that he can leave Betty and her friend Joan sitting on the sofa, talking, go out to a ballgame, come back three and a half hours later, and they're still sitting on the sofa? Talking?

What in the world, Harold wonders, do they have to talk about?

Betty shrugs. Talk? We're friends.

Researching this matter called friendship, psychologist Lillian Rubin spent two years interviewing more than two hundred women and men. No matter what their age, their job, their sex, the results were completely clear: women have more friendships than men, and the difference in the content and the quality of those friendships is "marked and unmistakable."

More than two-thirds of the single men Rubin interviewed could not name a best friend. Those who could were likely to name a woman. Yet three-quarters of the single women had no problem naming a best friend, and almost always it was a woman. More married men than women named their wife/husband as a best friend, most trusted person, or the one they would turn to in time of emotional distress （感情危机）. "Most women," says Rubin, "identified（认定） at least one, usually more, trusted friends to whom they could turn in a troubled moment, and they spoke openly about the importance of these relationships in their lives."

"In general," writes Rubin in her new book, "women's friendships with each other rest on shared emotions and support, but men's relationships are marked by shared activities." For the most part, Rubin says, interactions （交往） between men are emotionally controlled -a good fit with the social requirements of "manly behavior."

"Even when a man is said to be a best friend," Rubin writes, "the two share little about their innermost feelings. Whereas a woman's closest female friend might be the first to tell her to leave a failing marriage, it wasn't unusual to hear a man say he didn't know his friend's marriage was in serious trouble until he appeared one night asking if he could sleep on the sofa."

71. What old Harold cannot understand or explain is the fact that ______.

A. he is treated as an outsider rather than a husband B. women have so much to share

C. women show little interest in ballgames D. he finds his wife difficult to talk to

72. Rubin's study shows that for emotional support a married woman is more likely to turn to ______.

A. a male friend B. a female friend C. her parents D. her husband

73. According to the text, which type of behavior is NOT expected of a man by society?

A. Ending his marriage without good reason.

B. Spending too much time with his friends.

C. Complaining about his marriage trouble.

D. Going out to ballgames too often.

74. Which of the following statements is best supported by the last paragraph?

A. Men keep their innermost feelings to themselves.

B. Women are more serious than men about marriage.

C. Men often take sudden action to end their marriage.

D. Women depend on others in making decisions.

75. The research done by psychologist Rubin centers around _____.

A. happy and successful marriages B. friendships of men and women

C. emotional problems in marriage D. interactions between men and women

The differences between men and women's friendships
Betty and Harold have been married for years. But one thing still puzzles (困扰) old Harold. How is it that he can leave Betty and her friend Joan sitting on the sofa, talking, go out to a ballgame, come back three and a half hours later, and they're still sitting on the sofa and talking?
What old Harold cannot understand or explain is the fact that women have so much to share.
Betty shrugs. Talk? We're friends.
Researching this matter called friendship, psychologist Lillian Rubin spent two years interviewing more than two hundred women and men. the results were completely clear: women have more friendships than men. Rubin's study shows that for emotional support a married woman is more likely to turn to a female friend.
"In general," writes Rubin in her new book, "women's friendships with each other lie on shared emotions and support, but men's relationships are marked by shared activities.”
“ Men keep their innermost(内心深处的) feelings to themselves. " Rubin writes, " Whereas(然而) a woman's closest female friend might be the first to tell her to leave a failing marriage. However, a man by society doesn’t complain about his marriage trouble. it wasn't unusual to hear a man say he didn't know his friend's marriage was in serious trouble until he appeared one night asking if he could sleep on the sofa. "
【小题1】What old Harold cannot understand or explain is the fact that ________.

A．he is treated as an outsider rather than a husband

B．women have so much to share.

C．women show little interest in ballgames

D．he find his wife difficult to talk to

【小题2】Rubin's study shows that for emotional support a married woman is more likely to turn to _________.

A．a male friend	B．a female friend
C．her parents	D．her husband

【小题3】What do women's friendships with each other lie on in general?

A．shared emotions	B．support
C．shared activities	D．shared emotions and support

【小题4】According to the last paragraph, which type of behavior is NOT expected of a man by society?

A．Ending his marriage without good reason.

B．Spending too much time with his friends.

C．complaining about his marriage trouble.

D．going out to ballgames too often..

【小题5】What is the article about? ________.

A．happy and successful marriages

B．friendships of men and women

C．emotional problems in marriage

D．interactions between men and women

IELTS: international English language testing system
Introduction: The IELTS is jointly managed by the University of Cambridge Local Examination Syndicate (剑桥大学考试委员会), the British Council (英国文化委员会) and IDP Education Australia (澳洲教育国际开发署)
Why more and more people are taking the IELTS test?
The IELTS test is widely recognized by the colleges, universities and other academic institutions of Australia, New Zealand, Canada and the United Kingdom. More and more universities and colleges in the US are also accepting an IELTS result as a language requirement for application to degree courses.
IELTS is accepted by many important organizations, such as the New Zealand Immigration Bureau, the Australian Immigration and Cultural Department, the Canadian Immigration Bureau, the Australian Medical Council and the British Medical Association (总会).
Choice of two test types
There are two test models: Academic and General Training. The candidate must select the one suitable to his/here purpose for taking the test.
Academic: for candidates who want to apply for undergraduate or postgraduate courses.
General Training: for candidates who take IELTS for immigration purpose, training programmes, or work experience.
If you have any questions about which type to take, consult the Examinations Services staff at the British Council offices.
Content
The test is composed of four papers: Listening, Reading, Writing and Speaking. The first three papers must be taken at one sitting on one day, and the speaking paper may be taken up to two days later. Usually in China, the Listening paper is taken on a Saturday morning, followed by the Reading paper, and then Writing paper. The Speaking test is usually taken on the Saturday afternoon or on the following Saturday. Candidates must complete all four papers in order to obtain an overall score.
【小题1】How many organizations is IELTS managed by?

【小题2】Why are more and more people taking the IELTS test?

A．It is widely accepted by many countries.

B．It is widely recognized by many colleges, institutions and many important organizations.

C．It’s proof for people’s ability.

D．It’s interesting and acceptable.

【小题3】What kind of candidates should choose Academic test?

A．Candidates who want for immigration.

B．Candidates who want for training.