And, one thing I'd like to add to it, and that is, and I told this to my recitation sections that when you do these quizzes, in spite of the fact that it might be trivial in some cases, make sure you carry the units through.
而我要在这基础上再加一条,我在我的背诵课上也讲过,当你考试时,尽管单位不重要,但我希望你能注意它们。
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