2013年“五·一”期间，小明与小亮两家准备从东营港、黄河入海口、龙悦湖中选择一景点游玩，小明与小亮通过抽签方式确定景点，则两家抽到同一景点的概率是( )

等差数列{a_n}的前n项和记为S_n，若$a_3+a_7+a_{11}$为一个确定的常数，则下列各数中也是常数的是（ ）

    作者用移步换景的方法展示了天山景物的三个不同方面：一是从高到低，由远及近运用形象的比喻，依次描绘了天山的____、____和____；二是描绘了____的美景；三是描写____的景象。作者就是这样重点从天山的____、____和____三个方面展示了天山的景物，表达了____之情。

    Jenny is Mr. White's little daughter. She is good at Art . But she isn't good at Math. Mr. White is teaching her ,”What's six plus three?”

    Jenny counts her fingers and answers ,”It's nine .”

    “Good .What's twenty minus three?”

    Anna counts her fingers and toes. “Mm.it's five .No , it's seventeen .”Jenny answers slowly.

    “What's eleven plus twelve, then ?”Jenny looks at her fingers and toes . They are not enough (足够). Seeing this , Mr. White isn't glad and says, “Use your head, Jenny .”

    “That's not enough .I've got only one head.”

根据短文内容，判断下列句子是否正确。

我国的国家级高新技术产业开发区多依附于大中城市。（    ）（判断对错）