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【单选题】
听力原文：M：What's your opinion on my composition? W：The ideas are not bad．But if you can rewrite the first two paragraphs，it'll be better． Q：What does the woman mean? (7)A.
The ideas of the composition are not good.
B.
The handwriting of the composition is not good.
C.
Some parts of the composition are not well written.
D.
The composition is not complete.
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【简答题】下肢深静脉显像在双下肢踝部阻断下肢______________静脉，在阻断部______________端经足背静脉同时等速注入等量显像剂，同时开始采集图像，显示和记录显像剂经双下肢______________静脉随血流回流的全程影像，以观察下肢深静脉血管的______________、______________、______________、______________等变化。
【单选题】if, in a competitive market, a price ceiling is imposed establishing a maximum price below the market equilibrium price, this price ceiling would result in:
A.
shortages because the quantitiy demanded would exceed the quantity supplied
B.
surpluses because the quantitiy supplied would exceed the quantitiy demanded
C.
no effect on the quantitiy supplied or demanded
D.
surpluses because the supply curve would shift to the right
【简答题】现代汽车所用的发动机所用燃料不同,分为___________和___________。
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