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【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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