测垢样中的CuO时，为了消除试样中Fe3＋的干扰，采用加（）的方法来消除干扰。
A、柠檬酸；
B、酒石酸；
C、盐酸；
D、聚羧酸。
参考答案：A
某房地产开发项目的占地面积2000㎡，土地总价2600万元，如果房屋开发成本为4500元/㎡，预测销售价格为12000元/㎡，则该项目实现盈亏平衡的容积率为()。
A、1.4
B、1.5
C、1.6
D、1.7
按要求改写句子，每空一词。
1. "Where will you wait for me?" she asked me. (改为间接引语)
She asked me _________ I _________ wait for her.
2. Is he from England? Could you tell me? (合并为含有宾语从句的复合句)
Could you tell me _________ _________ _________ from England?
3. Could you tell me how I can get to the nearest supermarket? (改为简单句)
Could you tell me _________ _________ _________ _________ the nearest supermarket?
