It is true that the tea comes from a plant known as camellia(茶树).The different types of tea depend upon the region in which it is grown,harvesting time and the procedure of processing.Basically,there are four major classes of tea:white,oolong,green and black tea.
One of the least processed and the purest forms of tea is the white tea.This tea type has very low content of caffeine and appears a light colour,as the name also indicates,and a mild flavour.Due to the presence of high amount of healthy chemicals,it is helpful in fighting skin-related health problems and in getting a fair colour of skin.
Another tea type is the oolong tea,also called as wulong tea at some places which has very rich flavour and has a sweet fragrance.It is fermented (酝酿) but to a limited level,so the caffeine content in it is about 15% of what is in a cup of coffee.Drinking this tea proves to be useful in treating obesity,which is reducing the weight.
As opposing to oolong tea,the black tea is fully fermented,as a result of which it has caffeine of approximately 200% of what is present in a cup of coffee.If you consume black tea every day,you will be able to regulate the cholesterol (胆固醇) levels in the body and also keep your circulatory system healthy.It also adjusts cardiovascular (心血管的) function.
The last tea type is the green tea that is mostly preferred by many people owing to its multiple health benefits.Similar to the white tea,this tea also has less caffeine that is only 5%-10% of caffeine in one cup of coffee.This type of tea is also good to maintain the cholesterol and blood sugar levels within the acceptable range.In addition,they help in preventing tooth rot and other teethrelated illness.So,you can choose that variety that you find good with regard to its taste and health benefits.
Which are you advised to drink if you want to become more beautiful? ______
A. White tea.
B. Oolong tea.
C. Black tea.
D. Green tea.
What does the underlined word"regulate"in Paragraph 4 probably mean? ______
A. decrease.
B. increase.
C. improve.
D. adapt.
The similarity of white tea and green tea is that ______ .
A. they can prevent tooth rot
B. they can keep the cholesterol levels
C. they can contribute to losing weight
D. they can contain low doses of caffeine
What is the best title of the passage? ______
A. The benefits of tea
B. Main varieties of tea
C. The differences of tea
D. Main functions of tea