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【单选题】
关于肺炎支原体的致病性，下述哪错误的（ ）。A.
是原发性非典型肺炎的病原体
B.
主要经呼吸道传播
C.
其顶端结构吸附于细胞表面
D.
一般不侵入细胞和血流
E.
治疗首选青霉素
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【简答题】__________ (这是我们梦想的完美的房子). Lets take it.
【单选题】The sales of a particular company in a market, expressed as a percentage of the total sales is called ____ .
A.
market price
B.
market share
C.
market value
D.
market cap
【简答题】商品的两个基本属性是 和 。
【单选题】Total producer surplus in a market is equal to the .
A.
selling price times the number of units sold
B.
area underneath the demand curve to the number of units sold
C.
area between the demand curve and the market supply curve
D.
area between the market price and the market supply curve
【单选题】The sales of a particular company in a market, expressed as a percentage of the total sales is called .
A.
market value
B.
market share
C.
market price
D.
market cap
【简答题】这是我们应当牢记的一条原则 ）.翻译That theory must go hand in hand with practice is a principle _______（这是我们应当牢记的一条原则 ）.
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