下列叙述正确的是( )。A．非空线性表可以有几个节点没有前件 B．线性表的数据元素

读短文，判断句子的正(A)误(B)。

     His first name is Jim. His last name is Green. His phone number is three-seven-six, five-five-o-three.

Her first name is Mary. Her last name is Smith. Her phone number is two-eight-one, o-five-nine-four.

(     )1. His first name is Green.

( )2. Her last name is Smith.

(     )3. His last name is Green.

(     )4. Her phone number is 2810594.

( )5. His phone number is 3765053.

轮船、鸭子、木块能够浮在水面，这是因为它们受到了水的浮力，施力物体是__________，方向__________。

以下程序运行时输出到屏幕的结果是____(13)____。#include#includevoid main(){char a[]="Internet",b[]="Extranet"; int k,n; n=strlen(a)

软骨组织是半固态的结缔组织，根据包埋纤维种类的不同，软骨可分为（）。骨组织是由骨的细胞和细胞间质构成，骨的细胞包括（ ） 。

有以下程序：
main()
int x=102, y=012;
printf("%2d, %2d\n", x, y);

执行后输出结果是( )。

A) 10, 01
B) 02, 12
C) 102, 10
D) 02, 10