题目内容

【题目】太阳活动的周期是 ( )

A. 10年 B. 8年 C. 11年 D. 50年

【答案】C

【解析】试题分析:考查太阳活动的周期。太阳活动的周期大约是11年。

影 响

典 例

防 御

影响地球气候

亚寒带树木的年轮有规律的疏密变化与黑子11年的活动周期相对应;黑子活动高峰年,气候反常的几率增多,黑子活动的低峰年,气候状况相对平稳。

世界各国和我国都十分重视对太阳活动的观测和预测,力图把太阳活动可能造成的不利影响降到最低程度。

扰乱地球电离层

人阳活动增强时发出的电磁辐射和高能带电粒子流,强烈干扰地球高空的电离层,影响无线电短波通信,甚至会使各类无线电通信产生短时间的中断现象。

干扰地 球磁场

当太阳活动增强时,来自太阳的高能带电粒子流,会干扰地球磁场,产生磁针剧烈震动而不能正确指示方向的磁暴现象

产生极光

高能带电粒子高速冲进两极地区的高空大气,并与那里的稀薄大气相互碰撞会产生淡绿色、红色或粉红色的光带或光弧,叫极光

自然灾害

地球上许多自然灾害的发生与太阳活动有关,如水旱灾害等。

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【题目】阅读填句(共5小题;每小题2分,满分10分)(2017·江苏省启东中学高一下学期第三次月考)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

There was once a lonely girl who wanted love very much.One day while she was walking in the woods she found two birds. 1 She took care of them with love and the birds grew strong.Every morning they greeted her with a beautiful song.The girl felt great love for the birds.She wanted their singing to last forever.

2 The larger and stronger of the two birds flew out of the cage.The girl watched worriedly as it flew above her.She was so frightened that it would fly away and she would never see it.So as it flew close,she caught it quickly.She felt very happy. 3 Her love had killed it.

She noticed the other bird standing at the door of the cage.She could feel its great need for freedom and its need to fly into th方法e clear,blue sky. 4 The bird flew around her once,twice,three times.The girl looked happily at the bird's enjoyment.Her heart was no longer concerned with her loss(损失). 5 Suddenly the bird flew closer and landed softly on her hand.It sang the sweetest song she had ever heard.

The fastest way to lose love is to hold on too tight;the best way to keep love is to give it wings!

A.One day the girl left the door to the cage open.

B.She lifted it from the cage and freed it.

C.She took them home and put them in a small cage.

D.The birds were so beautiful that she loved them very much.

E.She wanted the bird to be happy.

F.She realized her mistake.

G.However,when she opened her found the bird had died.

【题目】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

A garden that’s just right for you

Have you ever visited a garden that seemed just right for you, where the atmosphere of the garden appeared to total more than the sum(总和) of its parts? 1 . But it doesn’t happen by accident. It starts with looking inside yourself and understanding who you are with respect to the natural world and how you approach the gardening process.

2

Some people may think that a garden is no more than plants, flowers, patterns and masses of color. Others are concerned about using gardening methods that require less water and fewer fertilizers(肥料). 3 . However, there are a number of other reasons that might explain why you want to garden. One of them comes from our earliest years.

Recall(回忆)your childhood memories

Our model of what a garden should be often goes back to childhood. Grandma’s rose garden and Dad’s vegetable garden might be good or bad, but that’s not what’s important. 4 how being in those gardens made us feel. If you’d like to build a powerful bond with your garden, start by taking some time to recall the gardens of your youth. 5 then go outside and work out a plan to translate your childhood memories into your grown-up garden. Have fun.

A. Know why you garden

B. Find a good place for your own garden

C. It’s our experience of the garden that matters

D. It’s delightful to see so many beautiful flowers

E. Still others may simply enjoy being outdoors andclose to plants

F. You can produce that kind of magical quality in your own garden, too

G. For each of those gardens, writer down the strongest memory you have

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