有色金属矿物是岩浆在冷却过程中矿物富集形成的。下图所示国家铜矿资源丰富、品质优、埋藏浅、分布广泛。该国大量出口铜矿石，开采铜矿需要用大量水来控制粉尘。铜矿经济给本国带来经济效益的同时，也造成很多问题。与B区相比，A区铜矿开采的主要制约因素是

读图，南方地区图，填空

增加:在缺词处加一个漏字符号(/\),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线，并在该词下面写出修改后的词。

注意:1）每处错误及其修改均仅限一词:

2）只允许修改10处，多者(从第11处起)不计分。

Dear Ginni,

    How are you getting on these days?

    I wonder if you could sell some Chinese knots (结)for me. I make them myself with red silk thread, cloth and some other materials. They look real beautiful in the shape of a diamond, about 5 inches long or 4 inches wide. In China, this knots stand for friendship, love and good lucky. People can either give them as gifts friends or hang them in their houses. They are only 12.99 dollars every.

      If anyone wants to know more about knots, let them write to me. Also, do let me know if you are need further information.

    Thank you !

Zhang Lin