超星 - 课程设计作业3 - 查题吧

单选题

设将单词保存在变量word中，使用一个字典类型counts={ }统计单词出现的次数，可采用以下代码：

A. counts[word]=count[word] + 1
B. counts[word]= 1
C. counts[word]=count.get(word,0) +1
D. counts[word]=count.get(word,1) +1

单选题

以下程序的输出结果是：a = 30b = 1if a >=10:a = 20elif a>=20:a = 30elif a>=30:b = aelse:b = 0print(‘a={}, b={}’.format(a,b))

A. a = 30, b = 1
B. a = 30, b = 30
C. a = 20, b = 20
D. a = 20, b = 1

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