先观察下列的计算，再完成习题：

$\frac{1}{\sqrt{2}+1}=\frac{\left(\sqrt{2}-1\right)}{\left(\sqrt{2}+1\right)\left(\sqrt{2}-1\right)}=\sqrt{2}-1$ ；

$\frac{1}{\sqrt{3}+\sqrt{2}}=\frac{\sqrt{3}-\sqrt{2}}{（\sqrt{3}+\sqrt{2}）（\sqrt{3}-\sqrt{2}）}=\sqrt{3}-\sqrt{2}$

$\frac{1}{\sqrt{4}+\sqrt{3}}=\frac{\left(\sqrt{4}-\sqrt{3}\right)}{\left(\sqrt{4}+\sqrt{3}\right)\left(\sqrt{4}-\sqrt{3}\right)}=\sqrt{4}-\sqrt{3}$

请你直接写出下面的结果：

    Mother's Day is an important holiday all over the world. The idea for Mother's Day 1 an American woman named Anna Jarvis. Anna hoped there would be a day for people to show 2 to their mothers, so she wrote many letters to important people of her time. In 1914, the second Sunday in May was celebrated as Mother's Day. People in Denmark, Ital, Turkey, Australia and Belgium all celebrate Mother's Day on the same day as Americans. The day gives people a good 3 to thank mothers. People of all ages do many things to make the day special for their mothers. A typical way is to make Moms stay 4 in bed. That means a mother doesn't need to 5 early to make breakfast for her family. 6, the rest of the family make breakfast for her. Kids do secret things to 7 their moms. They write love letters to their moms. Some even make gifts themselves for their moms. Anna Jarvis's mother 8 carnations, so people chose carnations as a present for their mother on Mother's Day. Carnations of different 9 have different meanings. People buy red carnations if their mothers are 10. However, white ones are used to express love to dead mothers.

据媒体2015年11月8日报道的对中国黄土高原进行的水土保持生态考察结果显示，黄河的年均输沙量减幅达80%，但水土流失问题依然严重，下列举措不利于解决黄土高原水土流失问题的是（　　）