读长江中游某地连续六天的天气情况统计图,分析回答8~9题。
![](http://user.ks5u.cn/html/2018-11-29/K7BVP-QRI3Bmt0-20181129213322.005.png"/></p><p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0">8.图示天气变化的原因可能是( )</p><p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0">A.冷锋过境 B.暖锋过境 C.气旋过境 D.反气旋过境</p><p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0">9.有关该地区这几日的叙述,正确的是( )</p><p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0">A.气温日较差不断缩小 B.空气的湿度不断增大</p><p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0">C.7日洪水水位最高 D.7、8日大气的保温作用最强</p></p> <br/>
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答案及解析:
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<b style="background-color: buttonface; padding: 5px 10px;">知识点：常见的天气系统</b></p>
<p style="font-size:11pt; line-height:150%; margin:0pt; orphans:0; text-align:justify; widows:0"><span style="font-family:宋体; font-size:11pt">8.</span><span style="font-family:宋体; font-size:11pt">B</span><span style="font-family:宋体; font-size:11pt"> 9.</span><span style="font-family:宋体; font-size:11pt">D</span></p>
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