题目内容

【题目】第二次世界大战期间的一个早晨,英国海军海岸防卫指挥部接到各雷达站报告,说雷达受到了来自东方的奇怪干扰,这种干扰的方向与太阳移动的方向一致,而且只出现在白天。据此完成下列问题。

【1】对雷达受到的干扰,其原因可能是

A德军使用的一种秘密武器

B.雷达本身的故障

C.太阳活动的影响

D.气候的影响

【2】太阳活动对地球造成的影响有

引起潮汐现象

干扰无线电短波通讯

产生磁暴现象

诱发降水量变化

A①②③

B.②③④

C.①②④

D.①③④

【答案】

【1】C

【2】B

【解析】

试题分析:

【1】太阳活动在色球层上出现耀斑现象,耀斑会干扰电离层,从而使电离层传输无线电短波信号受到影响,故对雷达受到的干扰,主要原因是太阳活动的影响,C项正确。

【2】阳活动对地球造成的影响有黑子影响降水干扰无线电短波通讯、产生“磁暴”现象、两极产生极光现象,故D项正确。

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相关题目

【题目】阅读下面短文,根据其内容写一篇60词左右的内容概要。

In a small village, the parents of a little boy were very depressed due to his bad temper(脾气). The boy used to get angry very easily and hurt others with his words. While he forgot what he spoke in anger, his friends and neighbors avoided him.

His mother and father tried many ways to make him give up his anger and develop kindness. Unfortunately, all their attempts failed. Finally, the boy’s father came up with an idea.

One day, his father gave him a huge bag of nails, asking him to hammer one nail to the fence every time he lost his temper. The little boy found it funny and accepted what his father had said.

His anger drove him to hammer 30 nails into the fence on the first day! Over the next few days, the little boy found it very difficult to hammer the nails into the fence and decided to control his temper.

Gradually, the number of nails hammered into the fence was reduced and the day arrived when he hammered none!

Now, his father told him to remove the nails every day as he had controlled his anger. Several days passed and the boy was able to pull out most of the nails from the fence.

The father appreciated him and asked him, pointing to one of the holes, “What do you see there?”

The boy replied, “A hole in the fence?”

He told the boy, “The nails were your bad temper and they were hammered into people. You can remove the nails but still see the holes in the fence. The fence never looks the same! It has scars all over! Your bad temper and anger were like that! Use words for good. Use them to show your heart!”

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【题目】阅读下面材料,回答问题。

根据我国风云二号卫星的实时监测,2001年3月28日17时40分至22分,太阳连续爆发6起中等强度的耀斑,其中19时40分左右和20时20分左右的太阳耀斑持续时间近1个小时。29日17时50分左右,太阳又爆发一次强烈的耀斑,持续时间约1个小时,耀斑喷射的高能带电粒子流——“太阳风暴几个小时就可抵达近地空间。

本次太阳峰年自1996年8月拉开序幕,1999年3月进入极盛期。从理论上说,目前太阳活动已逐渐走下坡路了。但它似乎并不服气,仍不时给地球通信、卫星、电力一点颜色看,而4月3日爆发的太阳X射线耀斑强度更是25年来之最。

本次太阳峰年有些特别,属于极盛期相对平静,下降期却高潮迭起。对照前两个太阳峰年活动,专家认为这种现象还是正常的。

(1)太阳风暴对地球的重大影响是(

A.给予地球特别多的能量

B.使地球的温度升高很多

C.使地球的降水增加很多

D.会使地球紫外线的辐射量增多

(2)耀斑出现在太阳大气的哪个部位(

A.太阳核部 B.光球层 C.色球层 D.日冕层

(3)根据太阳活动的周期,本次太阳峰年要真正滑入谷底,即太阳活动极小年的时间大约是(

A.2007年前后 B.2004年前后

C.2001年前后 D.2012年前后

(4)文中仍不时给地球通信、卫星、电力一点颜色看主要是指给地球及人类带来影响有

; ; (任填三点)

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