感谢信格式大学英语三级考试试卷
new birdI. Reading Comprehension (30%)
Passage One
Tread (踩) softly in the garden and pluck that ro with care; flowers cry when cut, cucumbers scream and even healthy fruit gurgles (发出咯咯声) according to new acoustic rearch on the stressful life of plants.
The findings, relead by the Institute for Applied Physics at the University of Bonn, could have important implications for farmers since, with the proper eavesdropping device, one can now distinguish between healthy and sick vegetables. Talking to plants, it ems, is not as rewarding as listening to them.
The Bonn scientists have developed lar-driven microphones that pick up sounds inaccessible to the human ear. When a leaf or a stem is sliced, the plant signals pain (or perhaps merely dismay) by releasing the gas ethylene (乙烯) over its entire surface.
演讲话题
Doctor Frank Kuhnemann of Bonn University has been trapping the ethylene in a bell jar. The gas molecules are later bombarded with lar beams, which makes them vibrate. This produces a sound wave picked up by the microphones. "The more a plant is subjected to stress, the louder the signal we get on our microphone," he said.
(By eavesdropping on plants it should be possible to develop an early warning system to detect pests and dia). Knowing the stress level of fruit and vegetables can also be an aid in efficient storing and transporting. Acoustical evidence demonstrates that apples emit higher levels of ethylene, which caus neighboring plants to wilt (枯萎). As a result, the scientists urged fruit producers to store apples parately.
1. The first paragraph tells us that _____.
perA. plants also have feelings like human beings
B. plants may have different reactions to different treatments
C. we should not cut flowers
D. healthy fruit will cry
2. The findings' implication lies in that _____.
A. we can know more about plants through talking to them
B. we can help plant grow by playing music for them
广州学英语C. with acoustic device, we can know about the situation a plant is in
D. with the help of eavesdropping, we can hear plants talking
headline3. In the experiment, _____ is not ud.
A. ajar
B. microphones
C. a bell
D. lar beams
4. According to the passage, plants can _____.利比亚地理位置
剧本A. dance to the music
B. listen to people talk
C. be trapped by lar beams
D. relea the gas ethylene
hey jude中文歌词5. Through the experiment we know that _____.
A. we should not store apples together with the other fruits
B. not all plants can relea the gas ethylene
刚果枪击事件C. we can hear the cry of a plant with our ears
D. plants also eavesdrop our conversation
Passage Two
(Despite a cooling of the economy, high-technology companies are still crying out for skilled workers). The Information Technology Association of America projects that more than 800,000 technology jobs will go unfilled next year. The lack of qualified workers pos a huge threat to the U.S. economy.
The most commonly cited reason for this state of affairs is that the country's agrarian-age (农村时代) education system fails to prepare students in the primary and condary grades for twenty-first-century work. Yet an inadequate and outmoded education system is only part of the problem. A less tangible but equally powerful cau is an antique classification system that divides the workforce into two camps: white-collar knowledge workers and blue-collar manual laborers.
