在风湿病中最有诊断意义的病变是
A．胶原纤维的纤维素样变性
B．风湿小结
C．心肌变性坏死
D．心外膜纤维素渗出
E．心瓣膜纤维组织增生
参考答案：B
选择合适的词填空
1. The boy was ( surprise; surprised) when he saw the alien.
2. Leila,please ( get out ; get out of) the shower quickly.I want to use it.
3. ( Because; While) I was walking down the street,I saw a stranger.
4. —What's up?
—Did you see the UFO? When it (landed; was landing) ,I was in the barber shop.
5. What was the robot doing ( while; when) the fire started?
6. He sits (in front of;in the front of) me.
爆炸现象的最主要特征足什么（）
A.温度升高
B.压力急剧升高
C.周围介质振动
