—My sister was sent to teach English in a poor mountain village in Xinjiang last year.
—She said she would never forget some pleasant _______ while working there.
A：experiments
B：expressions
C：experiences
D：emotions
有性生殖对生物的进化有重要意义，下列叙述中不正确的是（ ）
You can buy MP4 ______you like listening to music.
