学习历史，必须分清哪些是历史，哪些是观点．下列各项中属于观点的表述是（　　）

用同一种基本反应类型，经过两步反应不能实现的转化是（　　）

—I'm 160 centimetres tall.

阅读短文，根据短文内容选择正确答案。

Hi, I am Li Ping. I am from a small village. There are many houses and rivers in my village. The houses are very beautiful. The water is clean. You can see many fish in the river. There is a mountain near our village. There aren't any pandas in the mountain. But there are many trees on the mountain. A big forest is not far from the mountain. My village is pretty. I like my village.