A:氧化物
B:盐
C:碱
D:金属或合金
The teacher must have the ____(预先) teaching plan.
⑴____ A. palace B. save C. fan D. stamp
⑵____ A. lake B. race C. name D. cat
⑶____ A. like B. live C. nine D. rice
⑷____ A. close B. clock C. rose D. coke
⑸____ A. grow B. know C. show D. now