2014年3月8日马航MH370航班失联以来，中国、美国、马来西亚等二十几个亚太国家开展了联合搜寻工作，充分展现了国际合作的重要性。

亚太经合组织是亚太地区国家合作的典范之一。该组织将贸易投资自由化定为其长远目标，在具体步骤上，1994年制定的《茂物宣言》中所确定，发达成员和发展中成员分别于2010年和2020年实现投资自由化。此后开始通过单边行动计划和集体行动计划两种途径，逐步落实各成员对贸易投资自由化的承诺。

亚太经合组织在实现自由化目标的方式上有自己的特点，请运用材料加以论述。

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    Hi, I'm Harry. I'm fourteen years old. I live in Taipei, Taiwan. I am a second grader in a junior high school. I'm interested in playing computer games and watching TV. My favorite food is pizza.
    Hello, my name is Dolly. I was born on January 12th. There are four people in my family — my mother, my father, my sister and me. My favorite food is green tea. Now, I am a junior high school student. My hobbies are watching TV and climbing mountains. My best friend Tom lives in Canada. Maybe some day, you will be her friends, too!
    My name is Eric. My hobbies are fishing, reading books and playing computer games. My favorite subject is History, because my dad is a History teacher and I read a lot of books about history. I'm very bad at English, because it's hard for me. My favorite sport is ping-pong. I play ping-pong with my dad and my cousins every weekend.

人类遗传病有多种诊断方法。可通过显微镜观察细胞形状而做出诊断的遗传病是(     )

化合物M叫假蜜环菌甲素（其结构如图所示），它是香豆素类天然化合物．对M的性质叙述不正确的是（   ）

有三辆车按1，2，3编号，舟舟和嘉嘉两人可任意选坐一辆车．则两人同坐3号车的概率为____．