如果结果不匹配，请 
更多“fi=fopen("t.txt","r＋")执行后只能对"t…”相关的问题
fopen打开新的二进制文件，既能读又能写的方式字符串是()
A．"ab+"
B．"rb+"
C．"wb+"
D．"ab"
Nobody enjoys having a tooth______.
A．drill and fill
B．drilling and filling
C．to drill and fill
D．drilled and filled
将一个文本文件ma．dat拷贝到另一个文本文件na．dat中。
#include＜stdio．h＞
main()
{
FILE*ma，*na；
ma=fopen("ma．dat"，______)；/*第一空*/
na=fopen("na．dat"，"w")；
while(!feof(ma))fputc(fgete(ma)，______)/*第二空*/
felose(na)；______；/*第三空*/
}
#include"stdio.h"
main()
{FILE*I=fp；char ch；
if((tp=fopen("test.txt"，"W"))==NULL)
{printf("cannot open file\n")；exit(0)；}
ch=getchar()；
while(ch!='$')
{fputc(ch，fp)；putchar(ch)；
ch=getchar()；}
fclose(*fp)；
}
错误：______
改正：______
参考答案：错误
This passage is mainly about ______.
A．the beginnings of oceanography
B．the laying of the first undersea cable
C．the investigation of ocean depths
D．the early intercontinental communications
若fp已下确定义为一个文件指针，d1.dat 为二进制文件，请填空，以便为“读”而打开此文件：fp= fopen(【 】)；。
A.A.So fine was the weather
B.B.So was the fine weather
C.C.The weather so fine was
D.D.So the weather was fine
A public company that fails to obey the new law could be forced to ______.
A．pay a heavy fine
B．close down its business
C．change to a private business
D．sign a document promising to act
