关于君主与百姓的关系，中国古代史上的思想家们多有论述。孟子认为君权的获得依赖于天命和民心两方面，董仲舒主张“天子受命于天，天下受命于天子”，黄宗羲则主张“天下为主，君为客”。对上述材料理解不正确的是

青藏地区自然环境的突出特征是（　　）

（2015•盐城）血液经过体循环后，其成分变化主要是（ ）

关于透镜，下列说法中不正确的是（   ）

通读下面短文，掌握其大意，然后从所给的A，B，C，D四个选项中选出最佳选项。

    The girl in the picture is Jenny. She is 1 Beijing. She is a(n) 2girl. Jenny likes animals. She draws cats and 3  in her books. Jenny's favourite colour is4 . Her pencil is green. Her bag is green,  5 . She has a cat, Mimi. 6 a nice cat. Mimi and Jenny are  7 friends. Jenny likes to play table tennis. But she can't play it well.  8 Sunday, Mr Brown 9 her practise it. She likes him, and 10 is her favourite teacher.