高中英语Unit3Ahealthylife单元质量评估新人教版选修

单元质量评估(三)

时间：100分钟分数：120分

第一部分阅读理解(共两节，满分40分)

第一节(共15小题；每小题2分，满分30分)

阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

A

Despite the fact that two－thirds of Americans say they are on a diet to improve their health, very few are actually decreasing in size.“Dieting is a skill, much like riding a bicycle, and requires practice and good instruction, ” says Dr Bartfield.“You're going to fall over and feel frustrated, but eventually you will suc ceed and it will get easier.” According to Dr Bartfield, here are the top four reasons why many dieters fail to lose weight.

Underestimating(低估) calories consumed.Most people underestimate the number of calories they eat per day.Writing down everything that you eat every day can help increase self－awareness.Pay attention to serving sizes and use measuring cups and spoons as serving utensils to keep portions reasonable.Food eaten outside of the home tends to be much larger portion sizes and much higher in calories.Try to look up nutrition information of your favourite meal or restaurant and select a healthy meal before picking up the phone or going out to eat.

Overestimating activity and calories burned.Typically you need to cut 500 calories per day to lose one pound per week.This is very difficult to achieve through exercise alone, and would require 60 minutes or more of activity every day.A more attainable goal would be to try to increase activity throughout the day and get a total of 30 minutes of moderate to vigorous exercise most days of the week.But be careful—exercise is not an excuse to eat more!

Poor timing of meals.You need a steady stream of glucose(葡萄糖) throughout the day to maintain the best energy and to prevent metabolism from slowing down.Eat breakfast every day within one hour of waking up, then eat a healthy snack or meal every three to four hours.Try not to go longer than 5 hours without eating a healthy snack or meal to keep your metabolism steady.

Inadequate sleep.Studies have shown that people who get fewer than six hours of sleep have higher levels of ghrelin(胃饥饿素), which is a hormone that stimulates

appetite, particularly for high－calorie foods.

【语篇解读】文章从四个方面分析了节食者减肥失败的原因。

1．Which of the following can be the best title for the passage?

A．Top four best ways to improve your health

B．A new and effective method for losing weight

C．The advantages and disadvantages of being on a diet

D．Reasons why many dieters fail to lose weight

解析：主旨大意题。根据文章内容特别是第一段最后一句“According to Dr Bartfield, here are the top four reasons why many dieters fail to lose weight.”可知选项D 可做文章标题。

答案：D

2．It can be known from the passage that ________．

A．exercise does little work for losing weight

B．eating more will not put on weight after exercise

C．eating out probably makes you put on weight

D．people who sleep more eat more

解析：推理判断题。根据第二段中的“Food eaten outsi de of the home tends to be much larger portion sizes and much higher in calories.”可以推测，既然在外面吃的饭含有更高的卡路里，那么在外吃饭就很可能使你增加体重。

答案：C

3．The purpose of the text is to get more people to ________．

A．lose weight successfully

B．know about their own shortcomings

C．be familiar with their physical condition

D．protect themselves from diseases

解析：作者意图题。通读全文可知，这篇文章介绍的是减肥失败的四个主要原因，由此推测作者写这篇文章的目的是为了告诉人们应该如何成功减肥。

答案：A

B

Ebola(埃博拉病毒) has struck hard in Sierra Leone (塞拉利昂共和国)．More than one million children have been unable to attend school because the spread of the disease is so fast.But classes are now broadcast on 41 radio stations.The educational programmes are airing three hours daily，five days a week.

In the country's capital，Freetown，17－year－old student Doris Ansumana says