問題詳情

What is so special about green tea? The Chinese and Indians   16   it for at least 4,000 years to treat everything from headache to depression. Researchers at Purdue University recently concluded that a compound in green tea   17   the growth of cancer cells. Green tea is also helpful   18   infection and damaged immune function. The secret power of green tea is its richness in a powerful anti-oxidant.Green tea and black tea come from the same plant. Their   19   is in the processing. Green tea is dried but not fermented, and this shorter processing gives it a lighter flavor than black tea. It also helps retain the tea’s beneficial chemicals. That is   20   green tea is so good for health. The only reported negative effect of drinking green tea is a possible allergic reaction and insomnia due to the caffeine it contains.
16.
(A) would use
(B) are using
(C) had used
(D) have been using

參考答案

答案：D
難度：適中0.692308
統計：A(1),B(1),C(1),D(9),E(0)

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