A
Blowing our nose, burping (打饱嗝）after dinner and pooping (排便）…Unpleasant as they are, these things, according to Live Science, make up “the impolite science of the human body”.
Snot (鼻涕）
Snot's job is to protect our body from harmful viruses. Quite often, dirt, ash, or sand fill the air we breathe. But thankfully, snot stops these unhealthy things, which are taken out of our nose when we blow it.
Apart from protecting our nose, snot can tell us whether we’re healthy or not according to its appearance. When it’s clear and colorless, that’s a sign of good health. If it turns green or yellow, however, it could be a sign that our body is being attacked by a virus.
Gas
From drinking fizzy (起泡的）drinks to eating food, we often breathe in gases like carbon dioxide, which end up in our stomach. Naturally, if we take in too much gas, our stomach will be filled with pressure and we may suffer from pain and cramps(痉挛).To stop this from happening, burping is an effective way to get these gases out of our stomach.
Occasional burping benefits our body. However, burping too much isn’t a good sign. That’s because it may suggest that we’re suffering from a digestive disorder.
Poop
Pooping is an extremely important function of the body. Every time we eat. the food is passed through our digestive system. Once our body has taken everything it needs from the food, it leaves our body as poop.
And though it’s gross, checking our poop after we go to the bathroom could tell us more about our health.
1. What does it suggest if snot is green?
A. There might be dirt in it. B. It is protecting our nose.
C. You are very healthy. D. Your body might be fighting a virus.
2. What do we know about burping from the article?
A. Fizzy drinks make people burp more than food does.
B. People may suffer from pain or cramps when burping.
C. It makes gases like carbon dioxide leave our stomach.
D. Burping a lot can make digestive disorders go away.
3. What does the underlined word "gross’’ in the paragraph probably mean?
A. Unpleasant. B. Unnecessary.
C. Unimportant. D. Unhealthy.
【答案】1. D 2. C 3. A
【解析】
本文是一篇说明文，流鼻涕，打嗝，排便听起来很不雅观，但是却是身体不可缺少的部分，本文就介绍了这三种身体现象。
【1题详解】
细节理解题。根据第三段中的“If it turns green or yellow, however, it could be a sign that our body is being attacked by a virus.”可知，如果鼻涕是绿色的，说明身体受到了病毒侵袭。故选D。
【2题详解】
细节理解题。根据第四段内容可知，在吃东西或喝饮料的过程中，人体可能会吸入二氧化碳，当吸入的气体很多时，就会引起胃疼，而打嗝就可以将吸入的二氧化碳排出体外。故选C。
【3题详解】
词义猜测题。A. Unpleasant不愉快的，令人讨厌的；B. Unnecessary不必要的；C. Unimportant不重要的；D. Unhealthy不健康的。根据下文可知，上完厕所后检查一下粪便会告诉我们更多关于健康的信息，而检查粪便这件事肯定是很恶心，令人不愉快的。因此推断这个词的意思是令人讨厌的，令人不愉快的。故选A。
