(A)

    I live in Shenzhen．Shenzhen is my hometown(家乡)．In spring，it's warm and wet．It always rains．But I don't like the rain．I can't go out to play．The summer in Shenzhen is very long．It is very hot and sunny．I can go to the beach．I can swim and play volleyball with my friends．The autumn in Shenzhen is very short．It's cool and windy．I can fly a kite on Lotus Hill(莲花山)．Winter comes fast after the autumn．But it is not very cold．It never(从不)snows in Shenzhen．I love the snow．I want to play with snow．

阅读短文，判断下列句子的对错。

①乳酸CH₃CH（OH）COOH

②CH₃CH（OH）CH₂CH₃

③

④二氯甲烷．