《2025年课堂作业武汉出版社八年级英语上册人教版》

It’s known that green tea is a symbol of Chinese culture. Also, it helps to improve health in so many ways that some people think of it as a kind of medicine. Perhaps that is why the Chinese have been using it for more than 5,000 years to treat all kinds of medical problems. Today, scientists know that catechin, caffeine, vitamin C and theanine in green tea are good for health.
Catechin helps lower(降低) cancer(癌症) risk. It protects the body from cancer-causing substances(物质) and slows the growth of tumors(肿瘤). Besides fighting cancer, catechin prevents serious health problems like heart disease.
Caffeine causes the heart to beat faster. That’s why it was once thought that caffeine was not very healthy, but studies suggest that there are also good reasons for drinking caffeine. Specifically, caffeine has to do with a lower risk for Parkinson’s disease and liver(肝脏) disease. Yet, caffeine also has some weaknesses. It can influence sleep and make people nervous, so experts advise teenagers not to have more than 100 mg of caffeine a day. This is about the caffeine in a small cup of coffee.
Vitamin C is something that the human body cannot make enough by itself. So we have to get it through food and drink. The vitamin may play a role in improving physical conditions for colds and the flu. Also, it helps people to get well more quickly from those illnesses.
Theanine is another healthy substance found in tea. It has been shown to lower stress, both mental and physical. It is also used for preventing some brain diseases.
As you can see, green tea has many good values. Drinking it may help you stay healthy. Of course, as with any healthy substance, it is important to check if there are any bad influences as well.
61. Why have the Chinese been using tea for over 5,000 years according to the passage?
A. Because it’s delicious for us to drink.
B. Because it helps to deal with illnesses.
C. Because it’s a symbol of Chinese culture.
D. Because it’s made into different drinks.
(B)
62. Why is caffeine in green tea good for our health?
A. It lowers cancer risk.
B. It makes the heart to beat faster.
C. It lowers liver disease risk.
D. It makes people less stressed.
(C)
63. The underlined word “Theanine” probably means “______” in Chinese.
A. 咖啡因 B. 矿物质 C. 茶氨酸 D. 维生素
(C)
64. Which of the following best shows the structure of the passage?
(①= Paragraph 1, ②= Paragraph 2, …)

(D)
65. What does the writer mainly want to tell us?
A. Tea can take the place of medicine.
B. We should drink as much tea as possible.
C. Tea has some bad influences on our health.
D. Drinking tea may help people to stay healthy.
(D)

答案： 61.B 62.C 63.C 64.D 65.D