“我今天下午有三___课。”
“I have three ___ of class this afternoon.” Which measure word?
全球翻车率（内测预估）
A门
mén · measure word for courses/subjects
✓节
jié · measure word for class periods/sections
C场
chǎng · measure word for events/matches
D条
tiáo · measure word for long thin things
这学期修三门课，今天下午上三节课。量词的事，具体问题具体分析。
节 (jié) counts class periods on a given day; 门 (mén) counts courses/subjects in a semester. 下午 (afternoon) makes it 节.