Mr. Wu always spends a lot of time explaining things to us. He is so .A. coolB. patientC.

问题补充：

Mr. Wu always spends a lot of time explaining things to us. He is so .

A. cool

B. patient

C. selfish

D. unfair

答案：

A. cool

(答案→)B. patient

C. selfish

D. unfair

解析：考查形容词的词义辨析。根据题意“他花费好多时间给我们解释”，说明他“有耐心”。

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