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60' P1rotein drugs must be given by injection because they are digested and cannot catch the target by taken orally. P2:Nonprotein drugs have chemical bonds that are not broken in the digestive system. S:what procedure might be good for taking protein drugs. 感觉这题是相当于weakn题的感觉,因为protein drugs在消化系统中的问题,所以不好口服,现在问题问如何让它能用来口服,所以就是要克服缺点喽。A选项。
60’ P:New environmental regulations will increase the cost of disposing of salt water. C:The factury is switching from common salt to P.C for benefit. AE:直接的元素是cost的变化,就是要看更改用料是否能够减少花费和是否符合法规。从需求量大小,仪器是否增加,政策法规是否允许,替换后工厂产出变化来进行比较。
50‘ P:The frequency of certain surgical procedures waries by geographica region. C:The variations is due to unnessary surgical procedures E:most important 找到该数据统计的意义和目的,可以说明这种变化是否是必要的。
45’ P: the consumption of meat has risen as income has risen, it take more pounds of grain to produce one pound of meat. C:the country grain and meat will have to import one or both. A:两者之间的联系。 |
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