题目内容

【题目】20161017日至1023日,国家天文台在日面上观测到3个活动区,发生过1C级耀斑,为C4.2级。预计20161024日至1030, 太阳黑子相对数平滑月均值为44.0。预计20161024日至1030, 太阳耀斑活动水平为以0-1级为主。根据以上材料和你对太阳活动的相关了解,完成下列各题。

1

A. 太阳黑子是出现在太阳色球层上温度较低、显得较暗的部分区域

B. 太阳活动最主要的类型是黑子和太阳风

C. 耀斑爆发持续时间很长,所以释放的能量很大

D. 耀斑和黑子等太阳活动都具有突发性

2

A. “磁暴就是太阳活动使电磁波受干扰,导致短波无线电通信信号被吸收,使通信中断

B. 许多地区气候变化与黑子的变化周期有一定的相关性

C. 太阳风出现会引起电离层扰动,导致通信衰减或中断,使地面能看到极光

D. 尽管太阳活动对地球有影响,但影响不大,不必过多关注

【答案】

1D

2B

【解析】试题分析:

1】太阳黑子出现在太阳光球层上,太阳黑子和耀斑是太阳活动的重要标志,耀斑是太阳活动最激烈的显示,耀斑和黑子等太阳活动都具有突发性,所以D正确。

2】地球上存在电磁场,当太阳活动时,太阳大气抛出的带电粒子流,能使地球磁场受到扰动,产生磁暴现象,使磁针剧烈颤动,不能正确指示方向,耀斑爆发时发射的电磁波进入电离层。此时经电离层反射的短波无线电信号会被部分或全部吸收。从而导致通讯衰败或中断。

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

File Created

DELAYED BAGGAGE REPORT

PRINTED AT ALBANY N.Y. AIRPORT ON JULY 10, 2016 11:15 A.M.

Dear Valued Customer,

We regret that your baggage was not available to claim after your recent flight. Everything possible will be done to locate your belongings and return it to you on time.

For information on your delayed baggage, contact the United Airlines Baggage Resolution Center at its 24 hour, seven days a week.

Number:

1-800-335-BAGS (2247) (US Toll Free)

281-821-3536 (Local Houston Number)

Or visit site: http://www.united.com/for/bagtracing

As soon as you send your Delayed Baggage Report, United Airlines will begin to look carefully for your baggage system. Our Baggage Resolution staff will make every effort to call you once a day to keep you updated on our progress. Please refer to the File Reference Number on this receipt (凭证) when corresponding or calling so that we can quickly access your records.

Keep this receipt with your claim check (提取证)and E-Ticket receipt until your baggage is returned to you.

In most circumstances, United Airlines will deliver your baggage when it is located. Delivery times vary depending on location.

If your baggage has not been returned to you within the first five-day tracing period, please download a claim form from our website and return it to us with the required information included.

DELAYED BAGGAGE REPORT

DELAYED BAGGAGE REPORT FILE REFERENCE: ALBUA25876

Name: JOHN JACKSON Contact Number: 802-247-9999

Delivery Address: 66 MOONBROOK DR

BRANDON Email: minminvt@yahoo.com

VERMONT USA 05745

Bag Tag: 0037387643; /span>0037387657

Description: Soft-Side Upright suitcase; Non-Zippered, hard side horizontal suitcase

【1】Where does the report most probably come from?

A. Suitcase Tracing Center

B. Information Center of the Airport

C. Delivery Center of United Airline

D. Baggage Resolution Center

【2】What can we learn about John Jackson from the report?

A. He must have filed his Delayed Baggage already.

B. He will get back his delayed baggage in less than five days.

C. He should call 802-247-9999 for the information about his delayed baggage.

D. He may not know anything about his delayed baggage during the first five days.

【3】The purpose of the passage is __________.

A. to provide information about the location of the delayed baggage

B. to inform the customers of the time when the delayed baggage can be found

C. to instruct the customers how to get back their delayed baggage

D. to tell the customers the news that their delayed baggage was delayed

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