利用归纳推理推断，当是自然数时，的值

题干

利用归纳推理推断，当

是自然数时，

的值

A：一定是零

B：不一定是整数

C：一定是偶数

D：是整数但不一定是偶数

上一题下一题 0.0难度选择题更新时间:2013-05-16 08:56:46

C

A: Good afternoon! How are you?

B: Fine, thank you. Oh, that's Tom speaking.

A: You're right.____

B: Sure,but she is doing her homework. Wait a moment. Lucy, it's Tom.

(After Lucy answers the phone. )

C: Hello. Tom.

A: Hello, Lucy.____

C: I have no idea. How about you?

A: I'm going fishing nearby on Saturday. Would you like to go with me?

C: ____ I'm sure we can have fun together. By the way, How can we get there?

A: ____ It's not far from here.

B: Sounds good. ____

A: Let's make it 8 :00 am at the school gate. OK?

B: OK. See you then.

A: See you.