問題詳情
What is so special about green tea? The Chinese and Indians 21 it for at least 4,000 years to treat everythingfrom headache to depression. Researchers at Purdue University recently concluded that a compound in green tea 22the growth of cancer cells. Green tea is also helpful for infection and damaged immune function. The secret power ofgreen tea is its richness in a powerful anti-oxidant.Green tea and black tea come from the same plant. Their 23 is in the processing. Green tea is dried but notfermented, and this shorter processing gives it a lighter flavor than black tea. It also helps retain the tea’s beneficialchemicals. That is why green tea is so good for health. The only 24 negative effect of drinking green tea is apossible allergic reaction and insomnia due to the caffeine it contains.
【題組】21.
(A) would use
(B) are using
(C) had used
(D) have been using
參考答案
答案：D
難度：適中0.648148
統計：A(1),B(7),C(10),D(35),E(0)
用户評論
【祝大家順利上榜!】評論
Have been using-現在進行完成式（持續到現在的動作）c不行是因為它用的是過去完成式