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【单选题】
c语言中的标识符只能由字母、数字和下画线3种字符组成,且第一个字符()A.
必须是字母
B.
必须为下画线
C.
必须为字母或下画线
D.
可以是字母、数字、下画线中的任一字符
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【简答题】属于主观方面的健康资料是（ ）
【单选题】在横线处填入正确的代码,可以让局部变量的age给成员变量的age赋值。 class Person { int age; public Person(int age) { ______________//让局部变量的age给成员变量的age赋值 } public int getAge() { return this.age; } }
A.
this.age = age;
B.
age = age;
【单选题】以下代码输出为 _____ 。 age=22 if age 12 and age 18 and age 35 and age < 50: print('Middle age')
A.
Baby
B.
Adult
C.
Middle age
D.
Teenage
【单选题】we may think we're a culture that gets rid of our worn technology at the first sight of something shiny and new, but a new study shows that we keep using our old devices (装置) well after they go out of...
A.
are
B.
may think & shows
C.
gets
D.
keep
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