The experiment mentioned in Paragraph 4 finds that caffeine drinkers

试卷相关题目

• 1What does Paragraph 3 mainly discuss、

  A.Different effects of caffeinated coffee and decaf on sleep.

  B.Lotan Shilo's research design on sleep.

  C.What the subjects did after drinking decaf at night.

  D.Why some subjects took half an hour to fall asleep.

  开始考试点击查看答案
• 2Which of the following tells us how caffeine affects sleep、

  A.It blocks production of the enzyme that stops melatonin production.

  B.It interrupts the flow of the hormone that prevents people from sleeping.

  C.It halves the body's levels of sleep hormone.

  D.It stays in the body for many hours.

  开始考试点击查看答案
• 3The author mentions "pick-me-up" to indicate that

  A.melatonin levels need to be raised

  B.coffee is a stimulant

  C.neurohormone can wake us up

  D.caffeine can balance our brain hormone

  开始考试点击查看答案
• 4We can conclude from this passage that ballet

  A.is a dying art

  B.will continue to change

  C.is currently performed only in Russia

  D.is often performed by dancers with little training

  开始考试点击查看答案
• 5Who had an important influence on early ballet、

  A.Balanchine

  B.Antoinette

  C.Louis XIV

  D.Diaghilev

  开始考试点击查看答案
• 6Ohayon advises coffee lovers

  A.to drink less coffee during the day

  B.to take decaf after lunch

  C.not to go to bed after taking coffee

  D.not to drink coffee after supper

  开始考试点击查看答案
• 7Why didn't the French scientist continue to make the medicine that stopped pain、

  A.It didn't work well.

  B.It was hard to make.

  C.It hurt the stomach.

  D.It was not cost-effectiv

  开始考试点击查看答案
• 8Why was Felix Hoffmann looking for a painkiller、

  A.His company told him to do that.

  B.His father was in pain.

  C.He wanted to make a lot of money．

  D.He suffered from headach

  开始考试点击查看答案
• 9Bayer started making aspirin because

  A.it helped prevent heart attacks．

  B.other companies were making it.

  C.it worked well in stopping pain．

  D.the manager was a scientist.

  开始考试点击查看答案
• 10Bayer aspirin was

  A.the only drug with the name "aspirin"

  B.the first aspirin sold in the United States

  C.not sold in drugstores in 1915

  D.not easy to find in drugstores

  开始考试点击查看答案