“产率” by Mou Kefan

The right choice is D. _(:з」∠)_

And here is the explanation:

And I can’t help thinking about this:

I’ve been debugging this problem for more than an hour.
And now you tell me that the problem itself is wrong?
Nasty CF, wasting my money, wasting my time!

Mrs. Tu: How do you spell “its”?

My classmate: e~ t~ s~

The Radetzky this year is not as brisk as Dudamel’s version?

Hello 2018!
Hello world!

But I can’t afford one. QwQ