肺气肿的X线表现，错误的是()
A．桶状胸，肋间隙增宽
B．肺野透亮度增高
C．两侧膈肌升高
D．两肺纹理稀疏
E．心影呈滴状
参考答案：C
Patience，without ________ you can't do the work well，is a kind of quality.
用所给单词的适当形式填空。
1. － _________ they _________ (do) their homework in the classroom?
— Yes, they are.
2. There _________ (be) some people in the park.
3. — How much bread do you want?
— I want two _________ (piece) of bread.
4. I find the girl _________ (dance) in the room now.
5. The women are the _________ (children) teachers.
