Question

People often eat food to feel better. Recently, researchers have found that eating chocolate or drinking water can reduce pain, and reduce a rat’s response to heat.

The study was done by Professor Mason and Professor Foo at the University of Chicago. It is the first to show that this powerful painkilling effect occurs while the animals are ingesting(吸收) food.

In the experiments, rats were given either a chocolate chip to eat or had sugar water or common water flowed directly into their mouths. As the rat ate the chocolate or fluid, a light under the cage was turned on. It was done to provide heat that usually caused the animal to lift its foot off the floor. The researchers found that rats were much slower to raise their feet while eating or drinking, compared to tests done while they were not eating.

Surprisingly, the researchers found no difference in the delayed foot-lift response when the rat was eating chocolate and when it was drinking water. Former research showed that only sugary things reduce people’s response to pain.

“This really shows it has nothing to do with calories,”Professor Mason said.“Water has no calories, but it has the same effect as chocolate chip. It’s really shocking.”

The researchers believe that this effect is also present in humans. The painkilling effect can be turned to our advantage. For example, water perhaps can take the place of candy which is often used to calm children—or even adults—in the doctor’s office.“Eating is a painkiller, but we don’t need the sugar,”Professor Mason said.“So replace the doctor’s candy with a drink of water.”

82.What’s the best title for this passage?

  A.Chocolate is helpful to rats.

  B.People can eat food to feel better.

  C.A new way to kill pain is being studied.

  D.Chocolate and water can reduce the pain response to heat.

83.Which of the following statements about the experiments is WRONG?

  A.A light was turned on to provide heat.

  B.The rats ate the chocolate with water.

  C.Rats had slower response to heat after eating.

  D.Some rats ate nothing during the experiments.

84.The underlined word“it”in Paragraph 5 refers to“        ”.

  A.painkilling effect                       B.a chocolate chip

  C.water                                D.the result of the study

85.Which of the following is an advantage that the result of the study can bring us?

  A.Kids can eat a chocolate chip to reduce pain.

  B.Adults can drink sugar water to reduce pain.

  C.People can drink water to reduce pain.

  D.People can reduce pain in the same way rats do.

Answer 1

DBAC