如图14 所示，使线圈位于两磁极间（1）通电后，图14 中ab 段导线的电流方向

I had to stay later at the hospital that night to                76.                

do an operation. I finally 1eft about 11 p.m. I                   77.                

drove to home slowly because the weather was                 78.                

terrible -- a strong wind was blown and it was                  79.                

raining heavy. I was turning into our road when                80.                

a man suddenly run in front of my car. I almost                81.                

hit him but he stopped just in time. I was very                  82.                

frightened and the man looked frightened too. I                83.                

got out of the car, but he ran away after I could                84.                

ask him if he was right. It was very strange.                      85.                

请读程序： #include ＜stdio.h＞ main() { int a,b;for(a = 1,b = 1 ;a ＜= 100;a++){ if(b＞=20) break; if(b%3 ==1) { b +=3;continue; } b-=5;}printf("%d\n",a); } 上面程序的输出结果是( )。

A．7

B．8

C．9

D．10

下列关于线性表的叙述中，不正确的是( )。

A) 线性表可以是空表
B) 线性表是一种线性结构
C) 线性表的所有结点有且仅有一个前件和后件
D) 线性表是由n个元素组成的一个有限序列

在Excel 2003中，若在A1单元格中输入函数“=LOG10(10^5)”，按回车键后，则A1单元格显示的值为______。

A．100000

B．10

C．5

D．2

体外受精