What does the professor mean when she says this A: The professor does not approve of either slang or colloquial speech in any situation. B: The professor approves of colloquial speech in some situations, but not slang. C: The professor approves of slang and colloquial speech in appropriate situations. D: The professor does not approve of colloquial usage in writin

[听力原文]Man: Honey, where is my penWoman: Why not use your computer Writing by hand takes more time and it isn’t as convenient if you need to make any changes. Why does the woman suggest using the computer（） A: It’s more convenient to make changes when using a computer. B: A computer uses less paper. C: It’s less expensive to use the computer. D: Changes are always needed when writin