应及时开胸探查的是
A．严重闭合性气胸B．开放性气胸C．张力性气胸D．进行性血胸E．多根多处肋骨骨折
参考答案：D
根据句意及首字母或者图片提示填空。
1. English isn't d_______ to learn, if you have an efficient method.
2. I like v_______ very much, for it is very fun.
3. Playing _______ is indeed really interesting.
4. My sister has a ping-pong _______.
5. _______ is young boys' favorite.
6. We need a _______ ball, Dad!
7. Does your sister have a _______?
8. —Where is your pencil, Dave? —It's in the _______ on the desk.
9. There are many _______ on the tree.
10. His sister has two _______ They're very nice.
以下图形可以表示表格中哪几者之间的关系（ ）
