Fresh flowers actually continue to grow while in a vase．So in order to keep flow

Fresh flowers actually continue to growwhile in a vase．Soin order to keep flowers fresh, you need to consider what the flowers need togrow and stay healthy．Flowers need water, light, and food．Besides, you need to be aware of a few precautionsto take．

Distilled water（蒸馏水） is the best kind of waterto use for fresh flowers, because there are no chemicals in it．Change the water for your freshflowers every day or no less than every 2 days to prevent bacteria（细菌） building up．Cut the stems under water againbefore putting them back in the vase, so that they will be able to draw waterup easily．

Keep your fresh flowers out of directsunlight．At night,put them in the fridge．This will prolong their life．Adding commercial flower food to good water is probably the bestmethod of keeping flowers fresh．Some people put sugar in the water for food．That is OK, but commercialflower food has bacteria-killing ingredients, which can make the water moreacidic（酸性的）．If youwant a more natural food for your fresh flowers, try water that has beenspecially treated．Thatsolution will also give the water acidity, sugar, and bacteria-killing ability．

Keep your fresh flowers away from fruit．Fruit gas, or ethylene, willreduce the life of your fresh flowers, making them get older faster．Ethylene is what makes fruitripen．It is givenoff by dead flowers, too, so be sure to remove them．

If you follow these tips, your freshflowers will last a long time and beautify any room in which you put them．

1．What does the underlined word precautions in Paragraph 1 mean?

A．problems that happen to flowers． B．advantagesof having flowers．

C．measures taken to prevent problems．   D．preparations to grow flowers outside．

2．The fact that distilled water is most beneficial for fresh flowersindicates that ______．

A．distilled water is perfect for people to drink

B．running water shouldn’t be used to water flowers

C．it takes great efforts to keep flowers fresh

D．fresh flowers aren’t used to certain chemicals

3．In order to prolong the life of fresh flowers, you should ______．

A．protect them from direct sunlight during the daytime

B．put them in a damp place at night

C．put them in a fridge all the time

D．put them near water during the daytime

4．Which of the following is the best method of keeping flowers fresh?

A．Cutting the stems under water before putting them back．

B．Using distilled water and commercial flower food．

C．Keeping them away from fruit gas．

D．Watering them with water which contains sugar．

试题答案

【答案】

 C

 D

 A

 B

【解析】略