题目内容

I wonder _____ he asked such a silly question in public.

A. how
B. what
C. that
D. why

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He was interested in _______ he has seen at the exhibition.

A. which
B. that
C. all what
D. all that

有位老人在家做健身操时,心绞痛发作,立即含服硝酸甘油疼痛未缓解,心电图发现,V1、V2、V3、V4导联出现深而宽的Q波,ST段抬高>0.3mV,诊断为:

A. 心绞痛
B. 中风
C. 房颤
D. 心肌梗死

窦性心律是指激动起源于（）

A. 心房
B. 心室
C. 窦房结
D. 右心房

The old couple has been married for 40 years and never once ____ with each other.

A. they have quarreled
B. they had quarreled
C. have they quarreled
D. had they quarreled