专四

单选题根据听到的内容,回答题The advantages of the new treatment include all the following EXCEPT __________.

A. lower cost
B. more convenience  
C. fewer side effects
D. more effectiveness

参考答案:B进入在线模考
听力材料

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1The new treatment is time-saving due to its __________.

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3根据听到的内容,回答题How long did Obama visit Asia?

A. 8 day
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