山居秋暝
                                                                                                      王　维
                                                                                        空山新雨后，天气晚来秋。
                                                                                        明月松间照，清泉石上流。
                                                                                        竹喧归浣女，莲动下渔舟。
                                                                                        随意春芳歇，王孙自可留。

在叶肉细胞中，CO₂的固定和产生场所分别是（  ）
①叶绿体基质　　②类囊体薄膜　　③线粒体基质　　④线粒体内膜

一个物体从离地高h处自由落下，经过时间t落地，则它下落t/3时间时，离地面的高度为（   ）

— Does he like singing?

— No,he doesn't. He likes ____.