Question

【題目】閱讀理解七選五。根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

When we eat potato chips, it’s often difficult to stop until the bag’s empty. We open a bag of chips , and before we know it ,they’re all gone . So why can’t we control ourselves when it comes to eating this salty snack?【1】

Scientists found that certain neurons(神經(jīng)元) can make us want to eat salt. The neurons take note of whether our bodies are short of sodium(鈉)，the main part of salt .【2】

Scientists did experiments on mice. They found that when mice lack sodium, their body produces a chemical.【3】 More research showed that adding salt to meals makes people enjoy their food more, which may cause us to continue eating even if we’re full. Scientists asked healthy people to eat the same food for lunch for four weeks.【4】 At the same time, the scientists measured how much these people ate. They also asked the people how they felt about each meal. For example, If they felt happy or were still hungry after eating . The results showed that salt made people eat out 11 percent more food than usual.【5】 “But when we add salt to that food , all of a sudden those controls are gone,”researcher said.

So the next time you finish a whole bag of chips to yourself, don’t feel so bad about it – just blame it on your brain.

A. Eating less salt can be difficult at first.

B. Then, they send signals to our brain to encourage us to eat more salt.

C. When eating low-salt meals, they had better control over how much they ate.

D. It could have something to do with our brain.

E. Eating too much salt can lead to health problems.

F. This chemical then makes the neurons active.

G. Each week , the number of salt in the food was changed.

Answer 1

【答案】

【1】C

【2】G

【3】D

【4】A

【5】F

【解析】

短文是說明文。短文介紹了食鹽在我們身體中重要作用和人們攝入鹽的量的變化和神經(jīng)元有關(guān)。

【1】C. When eating low-salt meals, they had better control over how much they ate.當(dāng)人們吃低鹽食物時(shí)，他們最好控制食用鹽的量。根據(jù)前一句So why can’t we control ourselves when it comes to eating this salty snack? 可知建議減少低鹽食物的攝入量，故選C。

【2】G. Each week , the number of salt in the food was changed 每周，食物中鹽的量被改變。

推理判斷。根據(jù)前面The neurons take note of whether our bodies are short of sodium(鈉)，the main part of salt .這種神經(jīng)元記錄我們的身體是否缺少鹽的主要成分—鈉，可推測鹽在身體含量是變化的，故選G。

【3】D. It could have something to do with our brain. 那可能和我們大腦有關(guān)。根據(jù)后一句More research showed that adding salt to meals makes people enjoy their food more,可知，更多研究表明：往食物中加入鹽會(huì)讓人們更喜歡他們的食物，這說明跟我們大腦有關(guān)，故選D。

【4】A. Eating less salt can be difficult at first. 起初，食用少鹽可能困難。根據(jù)At the same time, the scientists measured how much these people ate.同時(shí)，科學(xué)家這些人食用鹽的量，可知開始讓人們減少鹽的食用量較難，故選A。

【5】F. This chemical then makes the neurons active.這種化學(xué)物質(zhì)使神經(jīng)元活躍。根據(jù)后一句科學(xué)家的話But when we add salt to that food , all of a sudden those controls are gone, 但是當(dāng)我們向著種食物加鹽使，這種控制突然消失了�？赏茰y鹽這種化學(xué)物質(zhì)控制著我們的神經(jīng)元，故選F。