
【名词&注释】
大兴安岭、太行山(taihang mountain)、昆仑山(kunlun mountains)、第二级(second order)、分界线(separatrix)、省级行政单位、第三级(third stage)
[单选题]下列现象中属于扩散现象的是
A. 擦黑板时,粉笔灰在空中飞舞
B. 打开一盒香皂,很快就会闻到香味
C. 粉笔蹭到衣服上,在衣服上留下粉笔痕迹
D. 冬天,雪花漫天飞舞
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举一反三:
[单选题]How long did he spend on his way to the place for his performance?
A. One hour. B. Two hours.
B. four hours and three quarters. D. One hour and a quarter.
[单选题]既是我国地势第二级与第三级(third stage)阶梯的分界,又是省级行政单位分界线的山脉是:
A. 大兴安岭
B. 阴山
C. 太行山
D. 昆仑山
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