题目内容
（请给出正确答案）
[主观题]
______ your work in case you've made any mistakes.A．Take care ofB．EnsureC．Look out forD．Ch
______ your work in case you've made any mistakes.
A．Take care of
B．Ensure
C．Look out for
D．Check
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A．内侧面上缘有肋沟
B．肋包括肋骨和肋软骨
C．第1～7肋软骨与胸骨侧缘形成胸肋关节
D．第8～10肋软骨形成肋弓
E．后端膨大称为肋头
