(单选题)

( ).

A.catch

B.detect

C.relieve

D.understand

参考答案：B

参考解析：

So that we can learn how to sense and actuate better over time, so that the network can learn to ___58___ performance problems and route around them. To detect denial-of-service attacks and block them before they do significant harm.后半句已经出现detect一词了，因此前面应该选detect合适。故本题正确答案选B。

知识点：词汇辨析英语语法串讲通用英语

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