在电解槽预热过程中，出现常见的异常情况（）。
A、阳极效应
B、阳极氧化
C、阳极脱落
D、阳极钢爪发红
参考答案：B, C, D
用be going to结构完成对话。
1. A: Are you ___________ to ___________ maize (玉米) this year?
B: No, I ___________ ___________. I planted maize last year.
A: What ___________ you going ___________ plant?
B: I'm going to ___________ tomatoes.
2. A: Is the elephant ___________ to play football?
B: ___________, it isn't.
A: What's it going to do?
B: It's ___________ to play basketball.
我国统计部门公布的失业率为全国登记失业率，即全国登记失业人数占全国从业人数的百分比。 ( )
