单项选择题

I think we should take a ______ . We've been discussing this for two hours now.

A．break
B．rest
C．interval
D．time

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单项选择题

瘦狗类业务单位往往是有（）的经营业务或单位。 A.
较高增长率、较高占有率 B.
较高增长率、较低占有率 C.
较低增长率、较低占有率 D.
较低增长率、较高占有率

单项选择题

Which one is not the feature of visceral pain ()

A．slow pain.
B．Ischemia, chemical damage, and stretching cause severely pain.
C．Localization of visceral pain is inaccurate.
D．Often followed by the referred pain and referred hyperalgesia.
E．The signals are transmitted by Ad fibers