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【简答题】
根据抽样调查的方法不同，抽样方法有______和______两种。
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反馈参考答案：
举一反三
【单选题】The writer believes that the Uruguay Round agreements on trade will ______.
A.
encourage more sustainable farming practices in the long term.
B.
do more harm than good to the international environment.
C.
increase pressure to cultivate land in the rich countries.
D.
be more beneficial to rich than to poor countries.
【单选题】对右旋伪麻黄碱的叙述错误的是
A.
是麻黄碱的差向异构体
B.
两个手性碳的构型是1S2S
C.
没有直接作用，只有间接作用，中枢作用同麻黄碱
D.
混合型拟交感神经药，中枢作用较小
E.
选择性收缩鼻咽部血管，可用做鼻充血减轻剂
【简答题】老年问题需要全社会的关注。 ( S)
【单选题】The Uruguay Round provided:
A.
reduced protection for patents, trademarks, and copyrights.
B.
enhanced protection for patents, trademarks, and copyrights.
C.
increased trade barriers
D.
reduced coverage of services and manufactured goods.
【单选题】A key goal of the 1986 Uruguay Round was to:
A.
extend GATT to cover trade in commodities.
B.
extend GATT rules to cover trade in services.
C.
increase agricultural subsidies.
D.
loosen the GATT's monitoring and enforcement mechanisms.
【单选题】What is the period of time for Uruguay Round?
A.
1975-1985
B.
1986-1994
C.
1995-2001
D.
1986-1995
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