某地污水中含有Zn²⁺、Hg²⁺、Fe³⁺和Cu²⁺四种阳离子。甲、乙、丙三位同学设计的从该污水中回收金属铜的方案如下

下列判断正确的是[ ]

A.三种实验方案中都能制得纯净的铜

B.乙方案中加过量铁粉可以将四种阳离子全部还原

C.甲方案中的反应涉及置换、分解、化合、复分解四种反应类型

D.丙方案会产生环境污染

根据A句句义,用适当的句型或短语完成B 句,使其句义相同或相近.

1. A: Compared with maths I like English better.

B: I _______ English ______ maths.

2. A: Even if he dies he won't give in.

B: He ________ ______ die ______ give in.

3. A: We should save the sick free from pain.

B: We should ______ the sick _____ pain.

4.A: He doesn't like to live a comfortable life.

B: He doesn't ______ _____ living a comfortable life.

5. A: Dr Yuan has spent all his time on his research.

B: Dr Yuan has ______ all his time ______ his research.