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肺炎支原体肺炎抗生素治疗首选红霉素。()

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24小时内咯血量在500ml以上为大量咯血。()

Which of the following can be regarded as a communicative language task？

A. Information-gap activity.
B. Dictation.
C. Sentence transformation.
D. Blank-filling.

部分支气管扩张患者以反复咯血为唯一症状，临床上称为干性支气管扩张。()

The main objective of mechanical practice is to help learners to absorb thoroughly the __________of a language item.

A. meaning
B. function
C. context
D. form