2020届临川一中高三英语二模试题及答案解析

2020届临川一中高三英语二模试题及答案解析

第一部分 阅读（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A、B、C、D四个选项中选出最佳选项

A

Obesity (肥胖症) is becoming a problem in our busy society, and almost one in three American adults is now

considered to be obese. Children obesity is alsoat an all-time high.

Obesity means being very overweight. If you are obese, you have too much bodyfat. If you eat more food

than your body can use, this will make you put on weight. Food that your body does not need will be stored as fat

by your body.

The following are the major factors that increase the risk of obesity.

What you eat plays a major role in weight gain. Eating a lot of fast food such as hamburgers, sweet drinks, ice

creams and other sweet food can increase the risk of becoming obese.

If you do not do enough exercise, you will put on weight as the food you eat is not being used to make energy

for physical activities.

The chances of you being obese are greater if your parents are obese.

There are many psychological factors that cause people to eat too much. People who are worried, unhappy or

bored will often eat to make themselves feel better. This is known as comfort eating.

Age is another factor, as you tend (趋于) to be less active when you get older. When you get older, you need

to eat less, and if you do not eat less, you will put on weight. Obesity can cause many health problems such as

heart problems, high blood pressure and many other serious medical conditions.

1. The underlined sentence in paragraph 1 means that ____.

A. obesity does not do harm to health.

B. there are more obese children than before.

C. all the American children are obese.

D. there are less obese children in the USA.

2. According to the passage, there are ____ major factors that increase the risk of obesity.

A. three B. four C. five D. six

3. What will the writer most probably talk about after the last paragraph?

A. How to avoid obesity. B. How to live in the busy USA.

C. What illnesses are caused by obesity.

D. How doctors treat heart problems.

B

Disease-carrying mosquitoes can spread diseases without affecting themselves. Nearly 700 million people get

a mosquito-borne illness each year, which results in over one million deaths. Humans experience continuous

pressures from disease-carrying mosquitoes in many parts of the world, so we have to find ways to fight against

those insects because they keep getting scarier.

Even though DEET remains the most commonly used, and most powerful, mosquito repellent ever developed,

scientists are actively pursuing effective products based entirely on plant oils. While DEET is an effective contact

repellent, many people dislike the oily feel and smell on their skin, and sometimes some people are sensitive to it.

Consumers are always interested in alternatives to DEET and other synthetic repellents, so there are numerous

natural repellents on the market.

In his lab atIowaStateUniversity, Dr. Joel Coats and his team have successfully tested these repellents against

three species of dangerous mosquitoes. The first group of the new repellents act through the air. These chemicals

have a vapor action that provides protection, and they are called “spatial” repellents, since they act through space.

These are potentially most useful in backyards, parks, and houses. The other group are the classic ones that stop

insects from standing on a treated surface, such as human skin, clothing or tents; collaborators at the USDA-ARS

and BioGents have conducted testing with humans to confirm the effectiveness and identify the very best ones.

The new repellents were designed and made from the natural materials in plant essential oils. They maintain

many of the advantages of the natural repellents: They are fully biodegradable, with no ecological concerns or

environmental wastes, and generally considered safe like the thousands of types of plant essential oils used in the

flavor and perfume industries. However, thorough testing will be conducted to determine if they are truly

non-poisonous because there is still no enough evidence.

4. What does the author mainly want to show in paragraph 1?

A. The way mosquitoes spread disease.

B. The high death rate of mosquito-borne illness.

C. The difficulty of fighting disease-carrying mosquitoes.

D. The urgency of finding tools to fight against mosquitoes.

5. What is a disadvantage of DEET? A. It won’t be effective for long. B. It can’t be applied universally.

C. It causes discomfort to the users. D. It greatly harms people’s health.

6. What can we learn about the second group of the new repellents?