第79句：

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

六級詞匯講解:
drop one course的意思是“退掉一門課程”。drop的用法在前面已經講到，這里不再贅述。pick up在本句中意為“重新學習，繼續學習”，正好與drop的意思相對。如:
Today we will pick up where we finished last Friday.
今天我們將接著上周五的內容繼續學習

六級考點歸納：
1. pick up含義豐富，除了“重新學習”以外，還有很多其他常用含義:帶“收拾干凈”。如:
I've got to pick this room up beFore the guests arrive，我必須在客人到來之前把房
間收拾干凈。“(車、船等)在半路上搭人”。如:
Now let's figure out whose car will stop to pick us up.
讓我們想一下，誰的車能在中途梢上我們。

2. “有起色;(生意等)好起來”。如:
The hotel business always picks up in summer.
旅館的生意常常是在夏季開始好轉。

3. “自然學會”。如:
Bob has never had a French teacher;he picked the language up by himself.
鮑勃從來沒有法語老師，他是自己學會這門語言的。

4. “聽見;看見”。如:
The dog's sense of hearing is so sharp that it can pick up the sound from afar.
狗的聽覺很敏銳，它能聽到遠方的聲音。

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