核酸分为DNA和RNA，其分类依据主要是

图甲为某植物细胞代谢过程图，a和b为不同气体，①一⑥为不同过程，图乙为该植物光照强度和温度与二氧化碳变化量的关系．根据所学知识回答下列问题：

（1）图甲中产生a物质的过程名称是____ ，I结构同时产生的物质是____ 

（2）图甲中a物质参与的反应发生的场所是____，b物质参与及产生过程中碳原子转移途径是____ ．

（3）图甲的结构Ⅱ中，产生能量最多的过程是____，该过程发生的场所是____ ．

（4）图乙中的C点对应图甲中的过程有____ （填数字符号），A点时，影响植物光合速率的因素为____

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Mike is an Englishman. He lives in a 1 building in the 2 London. There are eighteen floors in the building and he lives on the fifteenth floor. He 3 a lift (电梯) to go up and down. He works very hard. He 4 to work early. Every day he leaves his     5 and walks to the lift. He gets into the lift. It  6 him down to the first floor. He gets out of the lift. Then he 7 to a bus stop. The bus stop is in front of a station. It is about two hundred meters from his home. 8, he catches the No. 11 bus to work. But sometimes he goes by bike. He works in a factory about ten 9 from his home. His work 10 at half past eight. And finishes at a quarter to five. He gets back home at half past five.