_______ certain that his invention will lead to the development of production.
A. That's
B. This is
C. It's
D. What's
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________ still needs to be discussed.
A. How is the plan to be carried out
B. How the plan is carried out
C. Why is the plan carried out
D. Why the plan carried out
I wonder _____ he asked such a silly question in public.
A. how
B. what
C. that
D. why
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
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