A:HCl
B:NaOH
C:HF
D:CaO
如图所示为某生态系统中的食物网,请根据图回答有关问题:
—I often____at 4:00 in the afternoon .
—China is getting better and better at making high technology products.—That's right. People around the world can hardly avoid________ products made in China.
默写名句。