2021年考研英語的完形填空需要練習大量的題，逐漸熟悉題型，一直到考試前夕，都要保持做題的手感，以最好的考試狀態(tài)進入考場考試。下面是有關于2021考研英語模擬試題關于完形填空的練習，給各位做參考，屆時希望考生能夠考出最好的成績。

A potful of evidence suggests that the antioxidants and polyphenols in tea help protect you from stroke and heart attack, Alzheimer's disease, arthritis, and cancers of the lung, mouth, breast, pancreas, prostate and skin. The essential oils found in the leaves even aid__l__by increasing the flow of digestive juices.

Now it turns out that tea,__2__chicken soup or echinacea, is what can give your body an extra__3__to help it battle infections.

Given 20 ounces of tea daily, non-tea drinkers were better able to fight__4__bacterial diseases, according to a study at Brigham and Women's Hospital in Boston. The researchers__5__L-theanine, an__6__found in black, green, oolong and pekoe teas--but not in__7__teas, which usually don't contain Camellia sinensis, the one true tea__8__.

When broken down by the liver, L-theanine becomes an antigen called ethylamine,__9__primes the response of gamma-delta T cells against a__l0__of bacterial, viral, fungal and parasitic__11__, and possibly tumors. (Ethylamine is also found in other plant-based foods, such as apples, mushrooms and wine.)

In the study, blood samples from new tea drinkers were__l2__to E. coli, bacteria__l3__food poisoning and ulcers. The__l4__cells in the tea drinkers produced five times the interferon―an important element of the body's　15　system--than they had before tea was__l6__. No change was noted in a__l7__group of coffee drinkers.

“I don’tthink there’s a__l8__to [drinking tea],” says co-author Jack F. Bukowski, M.D, of Harvard Medical School. While tea won’t__l9__you or make you immune from illness, “people who do get sick will probably get a milder__20__,” Bukowski says.

1. A. deterioration B. digestion C. destination D. distinction

2. A. other than B. rather than C. better than D. more than

3. A. kick B. kit C. kite D. kid

4. A. off B. against C. with D. for

5. A. praise B. acknowledge C. credit D. create

6. A. item B. instance C. information D. ingredient

7. A. herbal B.credible C. favorable D. fashionable

8. A. product B. package C. producer D. plant

9. A. whichB. thatC. who D. where

10. A. lot B. number C. variety D. range

11. A. diseases B. infections C. illnesses D. deficiencies

12. A. exposed B. opposed C. disclosed D. proposed

13. A. connected with B. combined with C. referred to D. linked to

14. A. immense B. important C. immediate D. immune

15. A. defeat B. defense C. decrease D. disease

16. A. introduced B. increased C. indulged D. indicated

17. A. compare B. control C. contrast D. consent

18. A. downside B. upside C. inside D. outside

19. A. heal B. treatC. cure D. remedy

20. A. illness B. diseaseC. sickness D. case

【答案】BBAAC DADAC BADDB ABACD

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