题目

阅读理解B One of the things I like best about school is my art class．We have a very good teacher-Mrs.Hilbert．She is a great artist．I love watching her draw and paint(用颜料画)．She teaches us how to make the fight colors for our paintings．She plays good music when we draw and paint．We have two art classes a week and we draw and paint in class．Sometimes we look at pictures of other artists．It is interesting to do mis．It gives me ideas for my painting． Our school will have an art exhibit(展览)in May this year．Some of our pictures will be in the exhibit．Many peopl34、下图为某植物叶肉细胞内发生的生理过程图解。据图回答 （1）场所I是__　　___，场所Ⅱ是___　　___，场所Ⅲ中的C进入场所I，需要穿过　  层生物膜。 （2）在场所Ⅲ中，如果用放射性同位素对B示踪，则同位素最先出现在[  ]_____ ___中（方括号内填写图中的字母）。 （3）当光照强度达到某一值时，光合作用的强度不再随光照强度的增加而增加，造成这种现象的原因可能是___________________、 ________________等。 （4）长期水淹的植物会出现烂根现象，图中与之有关的物质是[   ]            （方括号内填写图中的字母）。