玉米的根系由哪三部分组成?
参考答案:
由初生根、次生根和支持根组成。其中支持根发达的抗倒伏力强。
I'm very surprised that _____ a little animal eats _____ many insects in a short time.[ ]
A. so; such
B. so; so
C. such; such
D. such; so
下列程序的输出结果是 #include"stdio.h" #define M(x,y) x%y main() int a,m=12,n=100; a=M(n,m); printf("%d\n",a--);
A.2
B.3
C.4
D.5