it is indicated that materials stronger than natural silk can be expected in the future.

试卷相关题目

• 1carbon nanotubes are currently the most popular topic in material science.

  A.right

  B.wrong

  C.not mentioned

  开始考试点击查看答案
• 2the mit team had tried different materials before they studied natural silk in their research.

  A.right

  B.wrong

  C.not mentioned

  开始考试点击查看答案
• 3if the hydrogen bonds break due to external forces, they break fast.

  A.right

  B.wrong

  C.not mentioned

  开始考试点击查看答案
• 4biologist and engineer are interested in understanding natural silks because they are very light and brittle.

  A.right

  B.wrong

  C.not mentioned

  开始考试点击查看答案
• 5silk’s strength comes from its weak hydrogen bonds working together.

  A.right

  B.wrong

  C.not mentioned

  开始考试点击查看答案
• 6why did the wild life experts visit the kalahari desert、

  A.to find where honey badgers live.

  B.to catch some honey badgers for food.

  C.to observe how honey badgers behae.

  D.C.to observe how honey badgers beha

  E.D.to find out why honey badgers have a bad reputation.

  开始考试点击查看答案
• 7what does kitso khama say about honey badgers、

  A.they are always looking for food.

  B.they do not enjoy human company.

  C.they show interest in things they are not familiar with.

  D.B.they do not enjoy human company.C.they show interest in things they are not familiar with.D.it is common for them to attack peopl

  开始考试点击查看答案
• 8what did the team find out about honey badgers、

  A.there were some creatures they did not eat.

  B.they were afraid of poisonous creatures.

  C.female badgers did not mix with male badgers.

  D.they may get some of the water they needed from fruit.

  开始考试点击查看答案
• 9which of the following is a typical feature of male badgers、

  A.they don’t run very quickly.

  B.they defend their territory from other badgers.

  C.they hunt over a very large area.

  D.they are more aggressive than females.

  开始考试点击查看答案
• 10what happened when honey badgers got used to humans around them、

  A.they became less aggressive towards other creatures.

  B.they lost interest in people.

  C.they started eating more.

  D.other animals started working with them.

  开始考试点击查看答案