II. 完形填空（共10题；每小题2分，满分20分）
阅读下面短文，掌握其大意，然后从21—30各题所给的A、B、C和D项中，选出最佳选项。
Married couples   21   more than their homes, cars and finances. They are also likely to have some of the same   22  , experts say. If one of them   23  from asthma (哮喘) , depression, high blood pressure or raised cholesterol n. (胆固醇) levels , his or her partner   24   be afflicted ( vt. 使苦恼,折磨) with the   25   illness , Julia Cox of the University in northern England said. Cox and her team said the most likely  26   for the shared diseases was environment. Married couples usually eat the same foods, are exposed to the same allergens (n. 过敏原) and often have similar exercise patterns, all of   27   contribute to ailments (n. 小病, 疾病) such as allergies, high blood pressure and raised cholesterol. The scientists     28     the medical history of 8,000 married couples, aged 30 to 74.     29    is known, the proper use should be     30   some efficient measures to stop this.
21. A. share            B. spare          C. own        D. use
22. A. cancer           B. diseases       C. ill              D. throat
23. A. keeps           B. goes           C. suffers           D. comes
24. A. should          B. shall            C. could      D. will
25. A. different        B. difficult        C. similar     D. same
26. A. season          B. promise         C. reason      D. approach
27. A. who             B. which           C. whose      D. that
28. A. studied          B. read           C. copied     D. understood
29. A. As              B. For            C. It          D. What
30. A. made to               B. made of       C. making of  D. to make of