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举一反三
【单选题】对热带型肺嗜酸性粒细胞增多症的描述，下述不正确的是（）
A.
血清华氏反应阴性
B.
是丝虫感染后引起的变态反应
C.
蛔虫或钩虫的幼虫也可引起本病
D.
X线两肺中下肺野弥漫性结节影或小片状影
E.
有乏力、厌食、发热、阵发性干咳伴气短和哮喘样发作症状
【单选题】Text 2 We recently sailed with our research ship through the Red Sea to the Indian Ocean where we did research work for about a year. Our main objectives (目标) were the little-known Maldi...
A.
the coral reef exists in regions with warm climate
B.
the coral reef provides favorable living conditions for them
C.
the creatures are away from the danger of being eaten by sharks
D.
most sea creatures feed on the colourful coral
【单选题】关于田纳西河流域自然地理特征的叙述正确的是
A.
流域内地形起伏小，水力资源不丰富
B.
流域内属于亚热带湿润气候，降水集中在夏秋季节
C.
田纳西河是密西西比河的一级支流，水量丰富但不稳定
D.
流域内矿产资源丰富，主要有煤、铁、铜等