What is the distinction between the new device and the traditional one、

试卷相关题目

• 1Which function cannot be achieved by the new system created by MIT、

  A.It can send out short wave radio signals.

  B.It has receivers to detect reflections of radio waves.

  C.It can detect people’s real time movement.

  D.It improves people’s health level and cures diseases.

  开始考试点击查看答案
• 2Why do researchers doubt that the new material will have a broad range of applications、

  A.Because there are no enough spiders to produce silk.

  B.Because it is too expensive to produce the material massively.

  C.Because the unsteady state of the material makes it hard to produce.

  D.Because the technology to produce the material is not finished yet.

  开始考试点击查看答案
• 3Researchers discovered that the capture silk produced by orb spiders is weird because ________.

  A.it could be stretched to many times its original length

  B.it remains taut, even when the thread contracts or compresses

  C.it is the toughest spider silk ever found

  D.it is produced by an endangered species

  开始考试点击查看答案
• 4Which would the breakthrough in creating a new material lead to、

  A.People’s interest in small animals.

  B.Increased awareness of environmental protection.

  C.New understanding of spider silk.

  D.Entirely new materials and technologies.

  开始考试点击查看答案
• 5Scientists created a hybrid material similar to spider silk after ________.

  A.studying a previously unknown property of spider silk

  B.cooperating with foreign chemists and biologists

  C.introducing new advanced equipment

  D.discovering new species of spider

  开始考试点击查看答案
• 6The new technology can be applied potentially in the following fields EXCEPT ___________.

  A.health care

  B.smart houses

  C.traffic control

  D.gaming

  开始考试点击查看答案
• 7According to Adib, the first device they invented could only ___________.

  A.observe people’s movement behind walls roughly

  B.capture people’s facial expressions precisely

  C.detect the passenger’s heart rate

  D.measure people’s breathing behind walls

  开始考试点击查看答案
• 8Compared with RF-system, Wi-Fi has ____________.

  A.much better software and hardware

  B.higher efficiency and accuracy

  C.much more powerful signals

  D.lower costs and better performance

  开始考试点击查看答案
• 9The first paragraph of the passage tells us that ________.

  A.the harder an athlete trains, the better his performance will be

  B.rest after vigorous training improves an athlete’s performance

  C.strict systematic training is essential to an athlete’s top performance

  D.improvement of an athlete’s performance occurs in the course of training

  开始考试点击查看答案
• 10By “overtraining” the author means ________.

  A.a series of physical symptoms that occur after training

  B.undue emphasis on the importance of physical exertion

  C.training that is not adequately compensated for by rest

  D.training that has exceeded an athlete’s emotional limits

  开始考试点击查看答案