下列语句中没有语病的一项是（    ）

某研究所发现，水果成熟时会释放挥发性的化合物，而且随着成熟程度的增加，其浓度也会有所变化。研究人员根据水果这一特性，制成了一种能“感知”水果是否成熟的标签纸。当水果成熟时，标签纸通过感知其释放的挥发性化合物的浓度而变换颜色。据此，以下结论合理的是（     ）

①变色标签纸感知水果成熟度是因为其具有的反应特性

②意识的主动创造性是水果成熟与标签纸相应变色的依据

③检验一种认识是否具有真理性必须超出认识的范围

④事物的多样性联系由人的各类社会实践活动建立起来的

阅读下面材料, 从A、B、C、D四个选项中选出最佳选项。

    Harold had a very difficult time last night．AIl the other students in his English class went to a party at their teacher's house．but Harold never got there．He followed his teacher's directions(指引), but he made one little mistake．

    From their school, he walked along Main Street to Central Road and turned left．He took the Central Road bus and got off at Fifth Street．He turned left and walked up Park Street to the bus stop at the corner of the street．

    He took Bus Number 42, but he got off the wrong stop．He got off at River Road instead of Rolling Road．He turned left and walked along River Road one block．He turned left again and walked two blocks, turned right, and got completely lost．

Harold was very upset(失落)．He really wanted to go to the party last night, and he can't believe he made such a stupid(愚蠢的)mistake．