Have you ever heard that we can "grow" fresh air in our home without using any expensive air﹣cleaning machines？ It becomes true． The studies in India show that people need only three green plants． What we have to do is put them in specific（特定的）space of the house， and each of them will do their share．

Betel palm	Evergreen
Put it in the living room．	Put it in the bedroom．
Four are needed for a person．	Six to eight are OK．
Money plant	Tulip
take away something bad from the air．	give off something bad to the air．
Put it anywhere in the house．	Never put it anywhere in the house．
As many as you like．	You decide．

Meattle， an engineer， has filled his office building with some plants and made it the healthiest building in New Delhi． So why not put some of these plants in your own house？ You will not only get better air but also feel fresh at any moment．

（1）What plant may be harmful to people？　　

A． Tulips．

B． Betel palms．

C． Evergreens．

D． Money plants．

（2）Which of the follow it TRUE？　　

A． Money plants can't be put in the bedroom．

B． Evergeens can change CO into O₂ at daytime

C． Meattle has planted many tulips in his office building．

D． A family of three needs 12 betel palms in the living room．

（3）What's the passage about？　　

A． How to grow green plants better

B． how to make the office building healthier

C． How to get fresh air through proper plants．

D． How to turn our home into a more beautiful one．