The command wc –l some_file will print out the number of:

The spokesman had to _____ some tricky questions from the reporters at the press conference. A: file B: fill C: field D: filter

如何定义一个文件读写变量？ A: FILE *file； B: FILE file； C: FILE &file； D: file *file；

According to the author, if your letter is thrown into some "letters-to-be-read" file, A: it will receiver immediate attention B: it will be dealt with by the secretary C: it is likely to be neglected D: it is meant to be delivered soon

According to the author, if your letter is thrown into some "letters-to-be-read" file,() A: it will receive immediate attention B: it is likely to be neglected C: it will be dealt with by the secretary D: it is meant to be delivered soon

创建一个d盘aa文件夹下news.txt文件对象，以下正确的是 A: File file = new File("d:/aa"); B: File file = new File("d:/aa/news.txt"); C: File file = new File("d:/news.txt"); D: File file = new File("d:\aa\news.txt");

下列__________说法是正确的？I:File file = new File("input.txt");try (Scanner input = new Scanner(file)) { String line = input.nextLine();}II:try (File file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}III:File file;try (file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}IV:File file;Scanner input;try (file = new File("input.txt"); input = new Scanner(file);) { String line = input.nextLine();} A: I B: II C: III D: IV

使用File file=new File("c:myletter

创建文件file的命令是()。 A: mv file B: mkdir file C: rm file D: cp file

3.1 下面是创建File对象的语句,错误的是( ) A: File f=new File("d:\\text.txt"); B: File f=new File("d: "); C: File f=new File("d:","text.txt"); D: File f=new File("d:\text.txt");