courses=["语文","数学","编程","英语"]，运行courses.pop()后courses变为？ A: ["数学","编程","英语"] B: ["语文","数学","编程"] C: ["语文","数学","英语"] D: ["语文","编程","英语"]

Economics ______ among the college students. A: is one of the basic courses B: is the basic courses C: are the basic courses D: are one of the basic courses

Courses for success does not provide courses in ______.

How about the courses in this language school Their courses are ______ .

— Science courses: 100 courses from 12) _________________________

MOOC是指()。 A: Massive Open Online Courses B: Massive Object Oriented Courses C: Multimedia Open Online Courses D: Multimedia Object Oriented Courses

输入序列为ABC，可以变为CBA时，经过的栈操作为: push,pop,push,pop,push,pop|push,pop,push,push,pop,pop|push,push,pop,pop,push,pop|push,push,push,pop,pop,pop

Restricted elective courses mean that students must choose one or more courses from a few designated courses or a group of elective courses.

输入序列为abc,若输出序列为bca,经过的栈操作为( ) A: push,pop,push,pop,push,pop B: push,push,push,pop,pop,pop C: push,push,pop,push,pop,pop D: push,pop,push,push,pop,pop

College students have to take required courses, but they can decide on their ( ) courses .