___________, everyone should handle these delicate instruments with care
As was mentioned just now
B. As having mentioned just now
C. Mentioned as just now
D. As just being mentioned
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It wasn’t such a good dinner _______ she promised us.
A. that
B. which
C. as
D. what
There is not tree _____ bears some fruit
A. which
B. that
C. what
D. but
This is the reason ______ I am not in favor of revising the plan.
A. which
B. because
C. why
D. since
成人气管内插管导管尖端距门齿的最佳距离是( )
A. 22±2 cm
B. 24±2 cm
C. 20±2 cm
D. 22±4 cm
E. 28±4 cm
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