配送中心一般采取两种不同的配送策略：使用本企业自有车辆来配送，或雇用车辆配送。在这两种策略的选用上，基本
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According to Paragraph 4, the "washout" phase was designed to______．
A. make the research be accomplished with a result as satisfactory as possible
B. obtain references for the possible health effects of stainless steel bottles
C. eliminate substances in bodies that may affect the result of the research
D. limit the sort of beverages taken in by participants to the minimum level
A.They are connected by Route 7.B.They are crowded with tourists.C.They
A. They are connected by Route 7.
B. They are crowded with tourists.
C. They have lots of old houses.
D. They have many rarr plants.
听录音，回答以下问题：
A. Clothes matching.
B. Making friends.
C. Stress relieving.
D. Interview preparation.
A.They have already made great progress.B.They have already done enough for their
A. They have already made great progress.
B. They have already done enough for their life.
C. There is still a lot of work needed to be done.
D. There is only a step away from complete success.
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