问题
Remember this, children. ________ you study, ________ knowledge you will get.—We know, Mr. Green.
A:The harder, the less
B:The harder, the more
C:The more carelessly, the more
D:The more carefully, the less
B:The harder, the more
C:The more carelessly, the more
D:The more carefully, the less
正确答案是：
