题目内容

【题目】阅读材料,完成下列问题

材料一2016年4月8日,太阳上出现了一个大黑子群AR2529,12日面积达到最大。AR2529是近段时间出现在日面上比较大的黑子群它们温度约5000 ℃,比光球层温度低1000 ℃。

材料二:据观察统计,从1999年夏天开始,太阳黑子的活动达到了最大值进入第23个太阳活动高峰年。在11年前的1988年,日本遭受冷夏的袭击,美国和欧洲却遭受酷暑和干旱的煎熬。在意大利,由于炎热而造成铁路变形、列车脱轨。美国从4月中旬到8月为止,几乎不下雨,密西西比河的水面大幅下降,航运被迫停止

(1)黑子同步起落的太阳活动是________,该太阳活动爆发时释放出大量的射线和____________。

(2)英格兰地区出现的灿烂的极光,主要是因为 ( )

A.地球高纬度大气强烈吸收太阳辐射

B.太阳黑子发出的电磁波扰动地球大气中的电离层

C.太阳大气抛出的高能带电粒子扰动地球磁场

D.太阳活动发出的高能带电粒子轰击地球高纬地区的大气

(3)结合材料推测,第26太阳黑子活动达到最大值将会出现于 ( )

A.2010~2011年 B.2022~2023年

C.2033~2034年 D.2014~2015年

(4)结合材料,说明太阳活动对地球产生的影响有哪些?

【答案】

(1)耀斑 高能带电粒子流

(2)D

(3)C

(4)影响地球上的气候;影响人类的无线电短波通信;扰动地球磁场,产生磁暴现象;产生极光现象。

【解析】

第(1)题,黑子出现在太阳大气的光球层,耀斑随黑子同步起落色球层相应的会出现耀斑,他们的活动周期是11年;耀斑爆发产生大量的宇宙射线和高能带电粒子流。第(2)题,太阳活动产生高带电粒子,受地球磁场的作用,带电粒子高纬的高空大气相互碰撞,出现美丽的极光,故D项正确。第(3)题,太阳黑子出现以11年为一个周期。1999第23个太阳活动高峰年,第26个太阳活动周高年应在2033年前后,C项正确。第(4)题,太阳活动影响地球上的气候,诱发水旱灾害;耀斑爆发产生强烈的电磁波,会干扰地球高空的电离层,影响无线电短波通信;产生高能带电粒子流,扰动地球磁场,产生磁暴现象;在两极产生极光现象。

练习册系列答案
相关题目

【题目】阅读理解

阅读下列短文,从每题所给的四个选项 (A 、B 、C D )中,选出最佳选项。

DESIGN―A―LOGO CONTEST

We need a logo—a graphic (绘画的) image—that will be the perfect symbol of our great new Wellsville Skate Park. We would like those of you who are counting the days until the grand opening to design an appropriate logo that can be used on stationery, business cards, fliers, brochures, posters and T-shirts. An appropriate, well-designed logo will provide an opportunity for young artists to receive recognition as well as great prizes. If you are interested, here are the things you need to know:

Logo Requirements

Design must be original .

Design can include no more than two colors.

The words “Wellsville Skate Park” must appear in the logo.

Logo should be submitted (提交) on 8×11 papers in every shape. Do not fold.

Submission Details

Name and address of the designer must appear on the back of the logo design.

Contestants (竞赛者) need to include a one-page written explanation describing the key features of the design.

Deadline

Mail entries(参赛作品) will be accepted between April 10 and May 15. Entries must be postmarked no later than May 15.

Winning designs will be posted on our website at www. wellsville. skatep. com on May 20.

Prizes

First Prize: A digital camera

Second Prize: One-year pass to Wellsville Skate Park

Honorable Mention: A T-shirt with the prize-winning logo.

MAIL ENTRY FORMS AND DESIGNS TO:

Wellsville Skate Park Logo Contest

Riverside Recreation Center

1295 New Rockford Hwy, Riverside, VA23226

【1】At the beginning, the advertisement/span> tries to encourage readers to enter the contest by ___________.

A. offering prizes

B. showing sample logos

C. explaining the rules

D. relating graphic details

【2】According to Logo requirements, the submitted design must ________________________.

A. include the full park name

B. be in a round shape

C. use at least four colors

D. be based on simple ideas

【3】How will winners be announced?

A. By mail. B. By telephone.

C. On the website. D. On the radio.

【4】Which website would be most helpful for contestants?

A. Website Design and Logo Design Company.

B. Designing Logos: A Guide.

C. Before and After: A Logo Design History.

D. Business Logos Designed Fast.

【题目】阅读理解

阅读下列短文,从每题所给的四个选项 (A 、B 、C D )中,选出最佳选项。

DOGS DRIVE CAR

Auckland, New Zealand

After two months of learning, Monty, and Porter were able to drive an automobile around a racetrack. “We wanted to prove how smart rescue dogs are,” animal behaviorist Mark Vette says. Vette first used voice commands and treats to teach the dogs how to turn a steering wheel and how to change gear (换挡).

The dogs’ ride only accelerated up to 7.5 miles an hour, and trainers could stop the auto using a remote control.

GOLDEN ZEBRA

Kailua-Kona, Hawaii

Zoe the zebra’s markings are special. The animal has white and golden stripes. Zoe’s appearance resulted from a rare condition called amelanosis (黑素缺失症). Her body doesn’t make enough melanin, the substance in an animal’s skin and hair cells that produces color. “Only 25 other golden zebras are known to exist in the world,” says Ann Goody, who runs the wildlife refuge where Zoe lives. In the wild, life may be difficult for animals with amelanosis because predators (捕猎者) can easily spot them. But Zoe is protected at her refuge.

COCKATOO MAKES TOOLS

Vienna, Austria

When Figaro the cockatoo spots food lying just out of reach from his cage, he builds a tiny wooden tool to sweep the tasty prize in his way.

The bird first revealed his talent when a stone he was playing with rolled out of his cage. The cockatoo couldn’t reach the stone. So he flew away and returned with a small branch, slipping it through the fence to slide the stone toward hm.

Wondering if he would do it again, scientists placed a nut exactly where the stone had been. This time, Figaro pulled out a small piece of wood in his cage and dragged the nut toward him.

【1】If Zoe the zebra is set free in the wild, she will ________.

A. meet no natural predators

B. not get along with other zebras

C. manage to make enough melanin

D. be easily found for her appearance

【2】What’s special about Figaro the cockatoo?

A. He is particular about his food.

B. He is extremely fond of stones.

C. He is good at drawing support from outside forces.

D. He can tell the difference between stones and nuts.

【3】What is the text mainly about?

A. Amazing animals.

B. Ways to help animals.

C. Animals’ unique talents.

D. Tips on training animals.

【题目】七选五

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。

Sometimes in your life, you may be asked to speak in front of a large group of people.Although it sounds a little scary, even those with stage fright can speak successfully to the group with adequate preparation.

1.Practice your speech before the big day.1】 If possible, practice the speech in front of a friend or family member to get used to saying it to real people.If you feel you must have note cards, limit the amount to about three cards.This will force you to keep your speech concise and help you keep your eyes focused on your audience.

2.Remember why you've been invited to speak.If you're battling fear over speaking to a large group of people, keep your mind on the fact that you were selected for this important role.The speech organizers must have seen something valuable in you or your expertise

2】

3. Remember that fear of public speaking is very common. 3】

Most of the people in the audience would be feeling the same fear and stress that you do in your position.Knowing this may make you feel better.

4.4】 What you say should be tailored to why you're there and who you're speaking to in order to avoid sounding general.If speaking to a charity group, mention the good work certain specific individuals have done for the cause.If speaking at a business conference, briefly state why you want to help these people.

5.Keep eye contact with the crowd.5】 Pick one person in each section and look at him while you're speaking.After each important point in your speech, switch your focus to another section.When you focus only on one person at a time, the size of the crowd isn't as frightening.

A.A good memory is really helpful.

B.Show appreciation to your audience.

C.Mention your audience in your speech.

D.The more you have it memorized, the better.

E.In fact, it's normal to feel nervous or stressed out before a big speech.

F.Separate the crowd into three sections mentally as you get up to speak.

G. The knowledge of other people's respect for you should reduce some of the fear.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网