题目详情:

[单项选择]
Passage Four
Pronouncing a language is a skill. Every normal person is expert in the skill of pronouncing his own language, but few people are even moderately proficient at pronouncing foreign languages. Now there are many reasons for this, some obvious, some perhaps not so obvious. But I suggest that the fundamental reason why people in general do not speak foreign languages very much better than they do is that they fail to grasp the true nature of the problem of learning to pronounce, and consequently never set about tackling it in the right way. Far too many people fail to realize that pronouncing a foreign language is a skill one that needs careful training of special kind, and one that cannot be acquired by just leaving it to take care of itself. I think even teachers of language while recognizing the importance of a good accent, tend to neglect, in their practical teaching, the branching of study concerned with speaking the language. So the first point I wan
A. Only a few people are really proficient.
B. No one is really an expert in the skill.
C. There aren't many people who are even fairly good.
D. There are even some people who are moderately proficient.

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[填空题]使用VC++6.0打开源程序文件3.cpp。其中类TC用于把文件输出到屏幕，然后进行文件的分割。分割的方法如下：第一个文件的大小是文件的前一半，另外一个文件的大小是剩余部分。此程序将in.txt文件中的内容输出到屏幕，并且将文件按照以上方式分割，存于文件out1.txt和out2.txt中。
其中定义的类并不完整，按要求完成下列操作，将类的定义补充完整。
(1)从输入文件中获得一个字符，并判断是否到文件结尾，如果到文件结尾，则退出循环。请在注释1后添加适当的语句。
(2)把获得的输入文件的内容存储到buf中，并且用len记录下文件的长度。请在注释2后添加适当的语句。
(3)将输入文件的后一半内容存储在第二个文件中，请在注释3后添加适当的语句。
(4)使用文件流对象打开输入文件in.txt，请在注释4后添加适当的语句。
注意：增加代码，或者修改代码的位置已经用符号表示出来。请不要修改其他的程序代码。
试题程序：
#include＜iostream.h＞
#include＜fstream.h＞
#include＜stdlib.h＞
class TC

public：
TC(char *fileName)

len=0；
fstream infile；
infile.open(fileName，ios：：in)；
char ch；
//********1********
while（　）

cout＜＜ch；
//********2********

infile.close（　）；

void split（　）

fstream outfile1；
fstream outfile2；
outfile1.open("out1.txt"，ios：：out)；
outfile2.open("out2.txt"，ios：：out)；
int i=0；
for(i=0；i＜1en/2；i++)

outfile1＜＜