Most kinds of rose plants come from Asia. But roses are also native to other areas including northwest Africa, Europe and the United States. In nineteen eighty-six, the U.S. chose the rose as its national flower. 

Some people say roses are difficult to grow. But you have a good chance of success if you start with a few suggestions from experts.

You should plant your roses where they can get sunshine for about six hours on bright days. You can buy young roses from a garden center. You can buy potted roses or bare-root plants. 

Some people say potted roses are easier to plant. They say the roots develop better. But the expert, Jeffrey Dinslage, points out that bare-root roses come without soil. So they are easy to carry. He advises getting bare-root roses as close to planting time as you can. If they arrive before you are ready to plant them, keep the plants in a cool, dark place.You should plant the roses as soon as possible.

The resting plants have no leaves but still need water. Watering should be done in the morning. But do not water too much. Jeffrey Dinslage says too much water may cause unhealthy discoloration on rose leaves. After heavy rains or too much watering, he advises pulling away mulch from around the roots. This will help dry the soil. 

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1.Roses are native to many areas except ______________.

A Asia

B Europe

C America

D Austrilia

解析：选D。D 细节理解题。在第一段中关于玫瑰的原产地提到了亚洲、欧洲和美国，但没有提到澳洲。故选D。

2.It’s good for roses to get _________ hours’ sunshine a day.

A 4

B 5

C 6

D 8

解析：选C。C 推理判断题。从第三段第一句where they can get sunshine for about six hours on bright days可知，玫瑰最好种在光照达6小时的地方，因此玫瑰每天最好有6小时的光照。故选C。

3.Which kind of roses does Jeffrey Dinslage advise growing?

A Potted roses.

B Bare-root roses.

C Either is OK.

D We don’t know.

解析：选B。B 推理判断题。第四段他只介绍了裸根玫瑰的种植，因此判断他建议养这种玫瑰。故选B。

4.Where should we put bare-root roses before we plant them?

A In a warm and dry place.

B In a warm and wet place.

C In a cool and bright place.

D In a cool and dark place.

解析：选D。D 细节理解题。根据第四段倒数第二句的keep the plants in a cool, dark place.可知答案为D。

5.How should we water resting roses?

A We should water them in the morning.

B They don’t need water at all.

C We should water them as much as possible.

D We should water them in the evening.

解析：选A。A 细节理解题。根据最后一段第二句Watering should be done in the morning.可知，应该在早上浇花。故选A。