/ʌ/, /ɜ:/and/ə/are central vowels.
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对镜练习握手规范,先正面后侧面,将连贯的动作分解练习。
Match the envelope items of an English letter with their typical positions.
以下程序输出的结果是________。#include "stdio.h"long fun(int n){ long s;if(n==1||n==2) s=2;else s=n-fun(n-1);return s; }main(){ printf("%ld\n",fun(3));}
A. 1
B. 2
C. 3
D. 4