题目

运用相关化学知识进行判断，下列结论错误的是( ) A．某吸热反应能自发进行，因此该反应是熵增反应 B．NH4F水溶液中含有HF，因此NH4F溶液不能存放于玻璃试剂瓶中 C．可燃冰主要是甲烷与水在低温高压下形成的水合物晶体，因此可存在于海底 D．增大反应物浓度可加快反应速率，因此用浓硫酸与铁反应能增大生成H2的速率 阅读理解 　　Many people think that animals in the zoo are very happy and lucky, but most of them are sad．Do you know why? Animals like tigers, lions and bears usually live in forests or mountains．They run, jump, play with their children and catch small animals for food．But now they have to stay in cages or small rooms in the zoo．They do not have to find food by themselves．Because the zoo keepers feed them．They do nothing but eat, walk and sleep every day．Their life in the zoo is quite different from that in the forest because they are not free． 根据短文回答卞列问题。 1．Are most of the animals in the zoo are happy? ________ 2．Where do animals like tigers, lions and bears usually live? ________ 3．Do tigers in forests catch small animals to eat by themselves? ________ 4．What do the animals in the zoo do every day? ________ 5．Is animals' life in the zoo quite different from that in the forest? ________