A:what; that
B:that; which
C:that; that
D:which; which
Ⅰ.日常生活中化学无处不在,从石墨、二氧化硫、熟石灰、醋酸、碳酸氢铵等物质中,选择与下列叙述相应的物质,用化学式填空:
— Where is Tom?
— He is practicing _____ English _____ he can win the speech competition.
下列不属于热带雨林动物的是( )