从血流动力学角度来看，心力衰竭的表现大致可归纳为三大主征，例外的是（） A.肺循环充

从方框中选择最恰当的选项完成下列对话，并将答案写在相应的横线上，方框中有两个选项是多余的。

A. I like koala bears. B. I like elephants. C. It’s my favorite animal, too. D. Where are you going? E. They’re from Australia. F. Let’s go and see a tiger. G. It sounds great.

A：Hi，Peter!   66
B：I’m going to the zoo.
A：  67 What animal do you like?
B：  68 
A：Why？
B：Because they’re strong and intelligent. What about you?
A：  69 Because they’re cute.
B：Where are the koala bears from?
A：Oh.   70