初中英语新题型---概要补全专练(九)

阅读文章，用恰当的短语或句子补全概要。补全部分总词数不超过30词，不能连续照抄原文超过3个词。

  Without the sun, nothing can live on the earth, including humans(人类). The sun is important.It makes plants grow and produce food. It can also help your body get vitamin D to make you strong. However, after spending long hours in the sun, you may feel tired. Why does the sun make you feel tired?

  First, your body doesn't want to get too hot,so it has to use lots of energy to cool itself down and keep its common temperature of 37°C. When you feel too tired in the sun, you should take a break and cool yourself.

  The second reason is that you may not have enough water. When you stay in the sun for long,you will sweat(流汗) a lot, and your body will lose too much water. As a result, your blood(血液)becomes thicker, so it is harder for your heart to send blood. And it means less O2 will be sent to your body. If your body doesn't have O2 inside, you will feel even more tired.

  Another reason is sunburn(晒伤), which is your skin's reaction(反应) to the UV in sunlight.As a way of protection, your skin turns red, but this is also tiring for your body.

  The warming rays(光线) are good for you, but tiredness is your body's way of telling you that it has had enough sunlight in the day. So you should have a rest.

解析：

首先，我们需要理解文章的核心内容：

太阳的重要性：太阳让植物生长、产生食物，还能帮助人体获取维生素D。

问题提出：在太阳下待太久会感到疲倦（tired）。

原因分析：

原因一：身体需要消耗大量能量来降温（cool itself down），以保持37℃的体温。

原因二：长时间晒太阳会大量出汗，导致身体缺水，血液变稠（thicker），心脏泵血更困难，氧气（O2）输送减少，人会更累。

原因三：晒伤（sunburn）是皮肤对紫外线（UV）的反应，皮肤变红也是一种保护，但这也会让身体感到疲倦。

结论：疲倦是身体在告诉你白天吸收了过多阳光，需要休息。

84. make us tired （或 make people tired）

前文说太阳很重要，后文说“这背后有三个原因”，这里的“这”指代前一句太阳可能带来的某种负面影响。根据原文第一段“Why does the sun make you feel tired?”可知，太阳会让人疲倦。

85. a lot of energy to cool the body down（或much energy to keep cool ）

对应原文原因一：“your body doesn't want to get too hot, so it has to use lots of energy to cool itself down and keep its common temperature of 37℃.”太阳加热身体，但身体需要消耗大量能量（lots of energy）来降温。这里“it takes...”后面需要接“大量能量来降温”的意思。

86. our / the blood thicker

对应原文原因二：“your body will lose too much water. As a result, your blood becomes thicker, so it is harder for your heart to send blood.”太阳让人出汗多，失去水分，导致血液变稠（blood becomes thicker）。这里需要填入“血液变稠”或“身体缺水导致血液变稠”的意思。

87.this / it is also tiring（或 it is also tiring for the body）

对应原文原因三：“sunburn... your skin turns red, but this is also tiring for your body.”太阳晒伤皮肤，皮肤变红，这也让身体疲倦。这里需要填入“这也让身体疲倦”或“皮肤变红也让人累”的意思。

备注：此练习适合初中所有学段