甲状腺次全切除术后患者取半卧位有利于()。
A.患者呼吸及吞咽
B.观察病情
C.切口内积液引流
D.减轻疼痛
E.防止压疮
参考答案:A, C
现有两根木条,长度分别为30cm、50cm,若要做一个三角形板,要求不剩余木料,则可以选择下列哪根木条( )
A.20cm
B.30cm
C.80cm
D.90cm
She doesn't eat junk food any more. She has ______. [ ]
A. give up it
B. given it up
C. given up it