属于链球菌致病性的是
A．急性肠炎
B．流行性脑膜炎
C．猩红热
D．霍乱样腹泻
E．肠热症
参考答案：C
解析：猩红热多由A群链球菌引起。
— It's 8 o'clock in the evening. What's your uncle doing?
— I think he ____ TV.[ ]
A. watch
B. watches
C. watching
D. is watching
以下程序的输出结果是( )。 #include ＜stdio.h＞ main() { int a=-1,b=1,k;if((++a＜0)&&! (b-- ＜=0)) printf("%d %d\n",a,b); else printf("%d %d\n",b,a); }
A．-1 1
B．0 1
C．1 0
D．0 0
