come up with和keep up with的区别。在线等。

B

keep up with释义:

1.
跟上
They walked so fast that I could not keep up with them.
他们走得那么快,我没法跟上。
2.
和...保持联系
She has kept up with some of her friends since her retirement.
她退休后一直同一些朋友保持着联系。
3.
跟上……，不落后于

come up with 释义:
赶上
We came up with a group of tourists.
我们赶上了一群旅游者。
2.
(针对问题等)想出;提供
He came up with good ideas for the product promotion.
他想出一个推广产品的好方法。
He could not come up with a proper answer.
他想不出一个合适的回答。
3.
准备好(钱等)
You must come up with the money by tomorrow night.
你明晚之前必须准备好钱。

选B：keep up with

come up with 是想出，提出的意思
keep up with 是赶上，跟上的意思

这里是说jim由于物理赶不上班里其他同学，所以要上周末补习班。

选 b
keep up with 跟上
.come up with 赶上 超过