Each of us has _______ life goals, which

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问题选择题

Each of us has _______ life goals, which will guide us to a bright future. Without life goals, we may

waste our lifetime.[ ]

A. a little

B. few

C. a few

答案

答案：C

填空题

比一比（在○里填上“>”“<”或“=”）。

1 m○90 cm 100 cm○10 m 25 cm○29 cm

300 cm○3 m 40 m○41 m 52 cm○25 cm

单项选择题

下列因素中哪项不是口腔颌面外科全身麻醉的特点？( )

A．中年患者多
B．出现张口困难
C．麻醉时要适度麻醉
D．手术失血多
E．麻醉后必要时可用药物催醒