What is the passage mainly about? - 考试宝

单选题 What is the passage mainly about?

A、 How biochemical changes occur in the human brain.

B、 Why people should keep active not only physically but also mentally.

C、 How intellectual activities influence brain-cell health.

D、 Why people should receive special mental training as they age.

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单选题 What is the main topic of the passage?

A、Strikes occur in essential industries.

B、Strikes are unpredictable.

C、Strikes involve workers from different trades.

D、Strikes occur frequently these days.

单选题 What is the main purpose of the passage?

A、They demand higher wages for the workers.

B、They try to educate their members.

C、They try to provide benefits for the sick.

D、They try to improve living conditions for the workers.

单选题 What will happen to Americans if they don’t get enough sleep?

A、Their weight will go down.

B、Their mind function will deteriorate.

C、Their work efficiency will decrease.

D、Their blood pressure will rise.

单选题 What does the passage mainly discuss?

A、The lifecycle of trees.

B、The number of trees.

C、The intensity of solar burning.

D、The quality of air.

单选题 What is the main purpose of the passage?

A、To learn the chemical elements in the Ice Age for the last ten thousand years.

B、To learn the pattern of solar wind activity for the last ten thousand years.

C、To learn the composition of different trees for the last ten thousand years.

D、To learn what’s been happening on the sun’s surface for the last ten thousand years.

单选题 What is the main topic of the passage?

A、The importance of sleep to a healthy life.

B、Reasons for Americans’ decline in sleep.

C、Some tips to improve the quality of sleep.

D、Diseases associated with lack of sleep.

单选题 What can be inferred from the passage?

A、It affects the growth of trees.

B、It has been increasing since the Ice Age.

C、It is determined by the chemicals in the air.

D、It follows a certain cycle.

单选题 What is the main reason for Americans’ decline in sleep?

A、They are more health-conscious.

B、They are changing their living habits.

C、They get less and less sleep.

D、They know the dangers of lack of sleep.