Passage 9
Do you feel sleepy on rainy days? 1 Many people feel the same way. But do you know why?
2 Our brain will have less serotonin(血清素) and more melatonin(褪黑激素) if there isn't enough sunlight. Serotonin helps us feel good, while melatonin makes us feel sleepy. As a result, we may want to go to sleep and even feel a little sad when it's rainy.
The humidity(湿度) of a rainy day also plays a part. 3 It's more difficult for our sweat(汗水) to dry in weather like this, so our body has to work harder to stay cool. This can make us feel tired.
4 When raindrops fall, they make a soft and gentle sound called "pink noise". This kind of sound can help people fall into a deeper and longer sleep.
Now you can understand why you're sleepy on rainy days. Then what can you do if you don't like that feeling? Well, you can get much natural light and keep yourself busy. 5 In this way, you won't feel sleepy anymore.
A. Also, you can use a machine to make your room dry.
B. As it rains, the air becomes wetter than usual.
C. One of the reasons is that there's little sunshine on rainy days.
D. If the answer is yes, you're not the only one.
E. What's more, the sound of rain makes people sleepy.
1. 2. 3. 4. 5.

1.D 2.C 3.B 4.E 5.A

【分析】
本题为英语七选五题型，需结合上下文语境及逻辑关系匹配选项。解题思路：先通读全文把握主旨（雨天犯困的原因及应对方法），再逐一分析每个空格前后的内容，匹配选项的语义和逻辑衔接。第1空承接前文问句并引出“很多人有同样感受”；第2空引出雨天犯困的第一个原因（阳光不足）；第3空承接前文“湿度”话题；第4空引出雨声助眠的原因；第5空对应前文应对湿度的方法。
【解析】
1. 第1空：前文问句“Do you feel sleepy on rainy days?”，后文“Many people feel the same way.”，D选项“如果答案是yes，你不是唯一的”承接问句并引出下文，符合逻辑，故选D。
2. 第2空：后文解释阳光不足导致激素变化的原因，C选项“其中一个原因是雨天阳光少”引出原因，契合段落主旨，故选C。
3. 第3空：前文提到“湿度”，后文说明汗水难干的原因，B选项“下雨时空气比平时更潮湿”承接湿度话题，故选B。
4. 第4空：后文讲雨声（pink noise）助眠，E选项“而且雨声让人犯困”引出该原因，故选E。
5. 第5空：前文提及应对方法，A选项“也可以用机器让房间干燥”对应湿度相关的应对，故选A。
【答案】
1.D 2.C 3.B 4.E 5.A
【知识点】
英语七选五、语篇逻辑衔接
【点评】
本题考查语篇逻辑理解与衔接能力，是初中英语常见题型，需结合上下文语义匹配选项，整体难度适中。
【难度系数】
0.5