The arroyo toad is disappearing because

试卷相关题目

• 1Amphibians lay their eggs

  A.in any stream they can find,

  B.in places without UV light,

  C.only on san

  D.D.only in the right conditions

  开始考试点击查看答案
• 2Losing amphibians means losing

  A.knowledge about fatal human diseases.

  B.knowledge about air and water pollution.

  C.a chance to discover new medicines.

  D.an opportunity to detect poisonous gases.

  开始考试点击查看答案
• 3When did British gentlemen begin to wear ties regularly、

  A.After the late 19th century.

  B.In the 1630s.

  C.In 1660.

  D.In the late 18th century.

  开始考试点击查看答案
• 4Who brought the Frenchmen's neckwear to Britain、

  A.Tony Blair.

  B.Charles ll.

  C.Jim Callaghan.

  D.Andrew Turnbull.

  开始考试点击查看答案
• 5Which of the following is NOT a social occasion、

  A.Going to church.

  B.Going to work in the office.

  C.Staying at home.

  D.Going to a party.

  开始考试点击查看答案
• 6Coal miners once used the canary bird to detect

  A.poisonous gases.

  B.air pollution.

  C.water leakage.

  D.radiation.

  开始考试点击查看答案
• 7Scientists think that the decline of amphibians could

  A.cause environmental change.

  B.cause a decline in other kinds of animals.

  C.be a warning signal for human beings.

  D.be a good sign for human beings.

  开始考试点击查看答案
• 8Belle would be fed some fruit juice if she

  A.grasped the joystick.

  B.moved the joystick to the side of the light.

  C.sat quietly in a special chair.

  D.watched lights on a display panel.

  开始考试点击查看答案
• 9The wires fixed under Belle's cap were connected to

  A.a plastic box next door.

  B.a computer at Cambridge University,

  C.a box of electronics in the booth.

  D.a box which, in turn, was linked to two computers

  开始考试点击查看答案
• 10Which of the following is NOT true of the robot built by Srinivasan、

  A.It was directed by signals converted from the electrical activity in Belle's brain

  B.It converted the electrical patterns into instructions for the other robot.

  C.It was six hundred miles away from where Belle was.

  D.It could perform the same function as Belle did.

  开始考试点击查看答案