以下句子组成的文档集，IDF值最低的单词是？{‘He is shopping.’ ‘She is shopping.’ ‘Let’s go shopping.’}
A: He
B: is
C: go
D: shopping
A: He
B: is
C: go
D: shopping
举一反三
- –Do you want to go shopping with us?–______________________________ A: I’d love to. B: If I were you, I’d go shopping. C: Why don’t you go shopping? D: Maybe you can go shopping.
- Online shopping will replace traditonal shopping.
- Good environment for shopping is an advantage of online shopping.
- Online shopping is cheaper than traditional shopping.
- Online shopping would be the end of traditional shopping.