运动兴趣的效能高低主要表现为______以及______。
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According to Paragraph 4, why does the author say that wind power represents an even more
A. The wind power is more convenient and easy to handle.
B. The wind power is more convenient to use than local utility.
C. The wind power is inconvenient but homeowners have to use it.
D. The wind power is so costly that few people prefer to use it.
P25一P75范围内的变量值有
A. 47.5%
B. 45. 0%
C. 90.0%
D. 95.0%
E. 50.0%
The word grouse in Paragraph 3 is closest in meaning to______.
A. talk
B. complain
C. speak
D. tell
因为营养不良，容易出现的主要营养问题
佝偻病、蛋白质一热量摄人不足、维生素缺乏、缺铁性贫血、缺锌症等
A. 胎儿期
B. 婴幼期
C. 学龄期
D. 青少年期
E. 老年期
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