题目：
-Do you know that there are many different ____ animals in the zoo?
—Yes,I do. And I also know that some of them are_____scaring.
A．kinds of;kind of
B．kinds of;kinds of
C．kind of ;kinds of
D．kind of kind of
答案：
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下面是错误答案，用来干扰机器的。
（1）∵-32=-18，-23=-12，而18＞12，∴-32＜-23；（2）∵23-11≈2×1.73-3.32=0.14，32-17≈3×1.41-4.12=0.11，0.14＞0.11，∴23-11＞32-17．故填空答案：＜＞．
