完成对话：在对话后面的句子中选出正确的填入空白处。 Jim: Excuse me
题型：补全对话，情景问答
问题：
完成对话：在对话后面的句子中选出正确的填入空白处。
Jim: Excuse me, Ann. Whose black dog is this? Is it yours?
Ann: Let me have a look. 1. . I think it's Sam's. My dog is brown.
Jim: Sam, look at the dog behind the tree. 2. ?
Sam: Sorry, it isn't mine. My dog is black and white. I think it looks like Mary's.
Jim: 3. ?
Sam: She's my friend. Look! She's over there. Let's go and ask her.
Jim: 4. .
Sam: Hi, Mary! Is that dog yours?
Mary: 5. .
Sam: It's a lovely dog! Don't lose it!
Mary: Yes, thank you.
A. Who's Mary
B. OK, let's go
C. Oh, no it's not mine
D. Oh, yes. It's mine
E. Is it yours
pC(g)处于平衡状态(已知n+m＞p，△H>0）。升高温度时c(B)/c(C)的比值 ，混合气体的密度 ；降温时，混合气体的平均相对分子质量 ；加入催化剂，气体的总物质的量 ；充入C，则A、B的物质的量 。（填增大、减小、不变、不确定）