“孔雀开屏”“蜻蜓点水”属于动物的[ ]
A.防御行为
B.繁殖行为
C.攻击行为
D.节律行为
答案:B
—My family usually holds a big party for my birthday, but I want to try a different way this year.
— .
A.Go ahead.
B.Come along!
C.Like what?
D.So what?
婴幼儿唇腭裂整复术的麻醉最好选用()
A.基础麻醉加眶下神经阻滞麻醉
B.双侧眶下神经阻滞麻醉
C.经气管插管的全身麻醉
D.经鼻腔气管插管的全身麻醉
E.基础麻醉