题目内容

______ to speak when the students interrupted her.

A. Hardly had she begun
B. Scarcely did she begin
C. No sooner had she begun
D. Barely she had begun

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A. on which
B. of whom
C. in which
D. about which

A. on
B. through
C. over
D. by

A. 直喉镜必须在标准头后仰位下操作
B. 弯喉镜可以在标准头后仰位下操作
C. 弯喉镜片顶端抵达舌根与会厌交界处，上提喉镜以显露声门
D. 直喉镜顶端越过会厌的喉侧面，上提喉镜直接挑起会厌显露声门
E. 直喉镜和弯喉镜在操作上没有什么不同