对烟叶收购过程中或履行完成合同后，单产超过（）的烟农，提出预警。
A、100公斤
B、100斤
C、200公斤
D、200斤
参考答案：C
如图所示，图中“●”“”分别表示两种不同质子数的原子，其中表示单质的是[ ]
A．
B．
C．
D．
句型转换。
1. She is tall and fat. She has long hair.(合并为一句)
She is _______ tall and fat girl_______long hair.
2. You should eat some fruit.(改为否定句)
You_______eat_______fruit.
3. Kate is going fishing on May 2nd.(就画线部分提问)
_______ _______Kate going fishing?
4. Jim becamc famous when he was fifteen.(改为同义句)
Jim became famous _______ _______ _______ _______ fifteen.
5. We did our homework yesterday evening. (改为否定句)
We _______ _______our homework yesterday evening.
”分别表示两种不同质子数的原子，其中表示单质的是[ ]
