问题
补全对话，情景问答
补全对话。
A=TonyB=Lingling
A:What did you do yesterday?
B:I went 
to listen to a 1 about animals in 2.
A:It sounds very 3.
B:Yes.Do you know the Wolong P
anda 4?
A:Of course 
I know.What's wrong?
B:The 5 thing is to hear 6 7 animals are in danger all over the world.
A:It's 8 to think about that.
B:We 
9 
to 10 our tigers,turtles and snakes.
A:Yes,you are right.
答案
1.talk 2.danger 3.interesting 4.Reserve5.surprising
6.how 7.many 8.sad9.need 10.protect
颊侧牙龈发红、水肿、光亮，有深牙周袋，有波动感，叩痛（
），松动Ⅰ度，菌斑指数3，牙体无明显龋病病损。