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【简答题】
Please find irrelevant sentence in the paragraph. (I)While dieting or losing weight, there are often times when we are tempted to eat things which we are not supposed to eat. (II) Therefore it is not very easy for someone to lose body fat and it can be very frustrating as well. (III) However, many studies nowadays support the idea that while dieting one should allow himself to eat once a week whatever he desires. (IV) Following a high-protein diet over a long period of time can cause considerable health problems. (V) It has been proved that this not only makes the dieter happy but also helps the person to continue his diet. A. (I) B. (II) C. (III) D. (IV) E. (V)
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举一反三
【单选题】下列对气湿的描述错误的是
A.
气湿就是空气湿度，表示空气中的含水量
B.
气湿对空气污染物的扩散有较大影响；气湿大，气温低时，空气中的污染物浓度显著增高。
C.
饱和差是指在一定气温下，空气的最大湿度与绝对湿度之差。
D.
相对湿度表示空气中水蒸气的相对饱和程度，是卫生学中表示湿度的最常用指标。
E.
饱和差越小，说明空气中可容纳的水汽越多，人体蒸发散热越容易。