从高处跳水,入水时应保持(),两腿伸直加紧,双手不能松开,直至重新浮于水面才可放松。
A.头在下,脚在上
B.脚在下,头在上
C.胸在下,背在上
D.背在下,胸在上
参考答案:B
---Rose, mind your step! Aunt Jane slipped over on the wet floor and broke her leg yesterday.
--- ___ .
A.It’ s none of your business
B.It doesn’t matter to me
C.Thank you for your reminding
D.I will remember your words
下列哪项是慢性特发性血小板减少性紫癜合并贫血最适宜的检查()
A.血清铁蛋白测定
B.血常规
C.血红蛋白电泳
D.酸溶血试验
E.血沉