To toot , to cut the cheese , or to pass gas . There are all funny ways to talk about something that everyone does :
Farts ! A normal person passes about half a liter of gas a day . That equals about 14 farts per day .
Then where do farts come from? There are several sources of fart gas . We get fart gas from the air we swallow .
Gas also goes into our intestines from our blood . In addition , gas is also produced from chemical reactions and
bacteria living in our intestines . Nervous people usually have more gas .
This is because they swallow more air . Besides , food goes through their digestive system faster .
This means oxygen cannot be absorbed from the food in time .
It turns into fart gas .
People's diet affects the stinkiness of farts . The smell has to do with the sulphur in foods such as eggs , meat , and cauliflower .
Beans cause a lot of farts , but these farts aren't usually really stinky .
Beans are not high in sulphur , but the sugar in them produces gas in the intestines .
Finally , people wonder , "Where do farts go when you hold them in ?" Well , there farts will not poison you.
However , you may get a bad stomachache from the pressure . Farts you hold in are neither nor absorbed.
They will come out sooner or later .
1. What is this passage mainly about ?
a. The way to reduce farts . b. Facts to know about farts. c. How to have a healthy diet. d. The dangers of holding in farts
2.Which of the following is NOT a way we call "fart" ?
a To cut the cheese . b. To toot. c. To pass gas. d. To empty bowels
3.Why do nervous people have more farts ?
a. They eat too many beans. b.They do not have enough sleep. c.Their blood pressure is too high. d.The food they eat is not well digested/
C吧 .............. D
4. According to this passage, which of the following foods is likely to cause the stinkiest farts ?
a.Beans b.Steak, C.Bread D.Pasta.
5. When we hold in a fart , where does it go ?
a. It is absorbed by the intestines.
b. It is released from the mouth or nose.
c. It is just delayed and will come out later .
d. It goes back to the stomach and helps with digestion .
D吧 ............. C