IT course is taught in all levels of schools we have entered the information society and

问题补充：

IT course is taught in all levels of schools, we have entered the information society and we must fit in with it.

A. so

B. while

C. and

D. for

答案：

A. so

B. while

C. and

(答案→)D. for

解析：本题考查连词辨析。句意：所有等级的学校都开设了IT课程，因为我们已经进入了信息社会，我们必须适应。for表示原因：因为；A．因此；B．然而；C．表示承接