给句子选择合适的答语。( ) 1. May I have some orange

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问题补全对话，情景问答

给句子选择合适的答语。

( ) 1. May I have some oranges?
( ) 2. What are you doing now?
( ) 3. Who is this?
( ) 4. How old is his sister?
( ) 5. Are you okay?

A. This is my mother.
B. No, I hurt my left arm.
C. I am eating chicken.
D. Sure.
E. She is ten years old.

答案

1. D 2. C 3. A 4. E 5. B

选择题

A．+→

B．→+

C．+→

D．→+

选择题

在一定容积的密闭容器中通入A、B两种气体，一定条件下发生如下反应：2A(g)＋B(g) 2C(g)　ΔH<0。达到平衡后，只改变一个条件(X)，下列量(Y)的变化一定符合图中曲线的是 (　　)