2012年中国矿业大学(北京)考博英语真题及答案(填空)

希赛网为考生们整理了2012年中国矿业大学(北京)考博英语填空部分真题及答案，供考生们备考复习。

A healthy diet with proper nutrition is essential for maintaining good overall health.(1)it was discovered earlier in this century, people have routinely (2)taking supplements for this purpose. The Recommended Dietary Allowance (RDA) is a used nutritional (3) for maintaining optimal health. The RDA specifies the recommended (4)of a number of nutrients for people (5)many different age and sex groups. The National Research Council’s Committee on Diet and Health(6)proposed a definition of the RDA to be that amount of a nutrient (7)meets the needs of 98 percent of the population. The RDA approach has a number of shortcomings. First, it is (8) on the assumption that (9)is possible to accurately define nutritional requirements for a given group. (10)，individual nutritional(11)can vary widely within each group. The efficiency with which a person converts food intake (12)nutrients can also vary widely. Certain foods when eaten in combination actually (13)the absorption of nutrients. For example, spinach combined with milk reduces the amount of calcium available to the body(14) the milk. Also, the RDA approach specifies a different dietary requirement for each age and (15).

问题内容：

试题答案：

(1)since

(2)been

篇幅原因，更多真题内容，请下载附件查看。

更多中国矿业大学(北京)博士考试英语真题，点击中国矿业大学(北京)考博英语真题汇总(2007-2013)。