只有把好奇心转化为____，进而发展为志趣，多加观察，大胆设想，锲而不舍的人，才能从好奇的现象中____，最终有所发现和创造，从而打开成功之门。

根据短文内容，选择正确答案。

                                                                                               A

    The most popular food in America was invented because a cook got angry. George Crum was a cook at a restaurant in Saratoga Springs, New York. One day in 1853, a customer(顾客) who had ordered fried(油炸的) potatoes sent them back to the kitchen. He wanted the cook to slice(切) them thinner and fry them longer. George Crum had a bad temper(脾气), and he thought the potatoes were fine the way he made them. To teach the customer a lesson, he sliced potatoes very thin and fried them until they were crispy(脆的). But instead of being angry, the customer loved the new fried potatoes. He asked for more. Other people who tried them like them too, and customers kept asking for them. Far many years, people called them Saratoga chips after the town where they were first made.

    Even now, after more than 150 years, potato chips are very popular. At least one of every ten potatoes grown in the United States is made into potato chips. So if you like potato chips, be glad George Crum had a bad temper!

在R上定义运算$\left|\begin{array}{cc}a& c\\ b& d\end{array}\right|$=ad-bc，若$\left|\begin{array}{cc}x& 3\\ -x& x\end{array}\right|$<$\left|\begin{array}{cc}2& 0\\ 1& 2\end{array}\right|$成立，则x的取值范围是（　　）

　　小雨妈妈的年龄比爸爸只差一点点．小雨弟弟的年龄是妈妈年龄数的个位数字．小雨比弟弟大一些．

小雨的妈妈、弟弟和小雨的年龄可能是多少？

下列人类活动不会对生物圈造成破坏的是（　　）

①围湖造田 ②排放污水 ③植树造林 ④焚烧垃圾 ⑤养花种草  ⑥喷药灭虫．