no. they have completely different meaning and usage. catch up with 1) physically chase down someone 2) talk with an old friend about the past come up with 1) usually refers to ideas 2) when you travel, you can say i came up (from south to north) with so and so.
答：keep up with 跟上, 不落后; 与...并肩前进 与...保持接触 catch up with 追上, 赶上, 与...并驾齐驱 抓住; 找到证据;...详情>>
答： 重视句子有效性和简洁性 在GMAT考试题目中，大家经常会看到对名词的状态性和动名词动作性的深入理解及名词词组核心词的辨认。而对动词时态的考查往往不是动作...详情>>
答：1.约翰•霍普金斯大学(Johns Hopkins University), GRE语文 161 2.范德堡大学(Vanderbilt University...详情>>
