63. A. deny

　　B. admit

　　C. assume

　　D. ensure

　　64. A. virtual

　　B. ineffective

　　C. day-to-day

　　D. on-the-scene

　　65. A. opinion

　　B. risk

　　C. performance

　　D. attractiveness

　　2015年高考试题议论文类

　　【2015·广东】完形填空（共15小题；每小题2分，满分30分）

　　阅读下面短文，掌握其大意，然后从1~15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

　　How long can human beings live? Most scientists who study old age think that the human body is ___1___ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live —— if he or she is ___2___ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ___3___. They wear out, and as a result, we get old and ___4___ die.

　　Even though we can’t live forever, we are living a ___5___ life than ever before. In 1900, the average American life span (寿命) was only 47 years, but today it is 75 years!

　　When does old age begin then? Sixty-five may be out-of-date as the ___6___ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ___7___ until after age 75.

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