第79句：

Well,can't you drop one course and pick it up next semester?

六级词汇讲解:
drop one course的意思是“退掉一门课程”。drop的用法在前面已经讲到，这里不再赘述。pick up在本句中意为“重新学习，继续学习”，正好与drop的意思相对。如:
Today we will pick up where we finished last Friday.
今天我们将接着上周五的内容继续学习

六级考点归纳：
1. pick up含义丰富，除了“重新学习”以外，还有很多其他常用含义:带“收拾干净”。如:
I've got to pick this room up beFore the guests arrive，我必须在客人到来之前把房
间收拾干净。“(车、船等)在半路上搭人”。如:
Now let's figure out whose car will stop to pick us up.
让我们想一下，谁的车能在中途梢上我们。

2. “有起色;(生意等)好起来”。如:
The hotel business always picks up in summer.
旅馆的生意常常是在夏季开始好转。

3. “自然学会”。如:
Bob has never had a French teacher;he picked the language up by himself.
鲍勃从来没有法语老师，他是自己学会这门语言的。

4. “听见;看见”。如:
The dog's sense of hearing is so sharp that it can pick up the sound from afar.
狗的听觉很敏锐，它能听到远方的声音。

5. “加快”。如:
The train picked up speed，
火车加快了速度。