​A new technique（）worked out, we set aboutour project.

A.new BufferedInputStream(new FileOutputStream(“abc.txt”));

B.new BufferedInputStream(new InputStream(“abc.txt”));

C.new BufferedInputStream(new FileReader (“abc.txt”));

D.new BufferedInputStream(new FileInputStream (“abc.txt”));

A.new InputStreamReader(new FileInputStream("1.dat")) ;

B.new InputStreamReader(new FileReader("1.dat")) ;

C.new InputStreamReader(new BufferedReader("1.dat")) ;

D.new InputStreamReader("1.dat")

The new school year is about to begin.()

A.int[][] Arr=new int[3][]; Arr[0]=new int[]{10,20,30}; Arr[1]=new int[]{40,50,60,70}; Arr[2]=new int[]{80,90};

B.int[,] Arr=new int[3,]; Arr[0]=new int[]{10,20,30}; Arr[1]=new int[]{40,50,60,70}; Arr[2]=new int[]{80,90};

C.int[][3] Arr=｛new int[]{10,20,30},new int[]{40,50,60,70},new int[]{80,90}};

D.int[3][] Arr=｛new int[3]{10,20,30},new int[4]{40,50,60,70},new int[2]{80,90}};

A.A a=new B（）；

B.B b=new A（）；

C.A a=new A（）；

D.B b=（B）new A();

A．Rent or Buy？

B．A New Way of Getting Home Furnishings.

C．Furnished Apartments.

D．A New Idea.

To land a job means to get a new job.()

A.:s/old/new/g

B.:s/old/new

C.:1,$s/old/new/g

D.:r/old/new