在克隆人的问题上，中国政府的态度是（　　）

①禁止生殖性克隆人　②不赞成、不允许、不支持、不接受任何生殖性克隆人的实验　③不反对治疗性克隆　④不反对生殖性克隆和治疗性克隆．

阅读理解，判断正误。

Four Seasons

    Spring is the best season of the year. It lasts from March to May. The days get longer. The nights get shorter, and the weather gets warmer. Everything begins to grow. Grass and trees begin to turn green. Flowers begin to come out. Children begin to fly kites outdoors.

    Summer comes after spring.  It is the hottest season in the year. It lasts from June to August. People try to find a cool place then. They always go swimming in pools, lakes, and rivers.

    Autumn is the harvest season. It gets cool. Farmers begin to reap (收割).They are busy from September to November.

    The coldest season of the year is winter. It's from December to February. The days are short and the nights are long. It snows sometimes and that makes the children happy. They make a snowman and dance around it. They go ice-skating as well.

选择方框内的单词，并用其适当的形式填入空白处，使内容意思通顺，语法正确。

    Linda is from ____. She is thirteen. Her sister's name is Sally. She is only five ____ old. Linda is in No.2 Middle School. She is a good student. She ____ beautiful eyes. They are big and black. She is a good football player. Her ____ star is David Beckham(大卫·贝克汉姆). Her father is a teacher. Her mother is a teacher, ____. They have a big house and a car. She has a happy family(家庭).

中国人民大学副教授孟宪实在《百家讲坛》作了“太宗继位”“魏征进谏”“以民为本”等系列讲座。由此推知他所讲的主题是（    ）