先通读下面的短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
    Some young people are worrying about acnes(青春痘) on their faces, and some are worrying about their figures(身材). Do you know 1 on earth（到底，究竟） the secret of beauty is? Think of smile and health, and then you may find the 2 .
    Maybe you are not 3 with your big nose, your small 4 or your weight(体重). Don't waste energy and feelings on the way you look . In fact, when you become an 5 and look at pictures of your past time, you'll find how cute you are.
    6 is the best way to make you beautiful. When people are happy, they look nice. When people smile or laugh from the7 of their hearts(心脏), they look very beautiful.
    Don't worry about your weight too much. Don't 8 food for it. No one lives 9 health. So you need to eat healthy food and do enough exercise.
    When you accept（接受） what you have 10 and enjoy them, you will really become pretty “inside and out”.

20世纪90年代以来，党和政府为实施“科教兴国”发展战略确定的奠基工程是（    ）

亚洲人体内普遍缺乏乳糖酶，造成饮用牛奶后出现肠胀、腹胀、腹泻等不良症状．下列有关乳糖酶的叙述，正确的是（   ）

说出下列句子的修辞手法

秋天是美丽的，在曼妙的韵律中舞着她的裙摆。

演示地球自转时，用手电筒模拟“太阳” ，拨动地球仪(如下图)。读图完成下列各题。