题目

下列四种变化中,有一种与其他三者有本质的区别,它是(    ) A.铁生锈          B.水汽化        C.煤燃烧        D.脂肪酸败 答案：思路解析：此题考查物理变化和化学变化的本质区别。A、C、D选项都是化学变化，只有B项是物理变化，所以B项与其他三项有本质的区别。 答案：B根据短文内容，选择最佳答案。Long long ago, there was a farmer. He wanted to eat nice food every day, but he didn’t like working.One day, the farmer slept under a tree near his farm. Suddenly, a rabbit ran into the tree and died. The farmer woke up and saw the dead rabbit beside him. He was very excited. He took the rabbit home and had a big dinner that evening.The next day, the farmer didn’t go to work on the farm. He sat under the same tree and waited there day after day. In the end, he was too hungry and died.【1】The farmer didn’t like working. He was . ( )A. cleverB. lazyC. happyD. hungry【2】One day, the farmer slept . ( )A. on his farmB. at homeC. under a treeD. in a hole【3】The farmer was about the dead rabbit. ( )A. excitedB. sadC. hungryD. happily【4】The next day, the farmer waited under the tree for . ( )A. his friendsB. another rabbitC. another farmerD. a rest【5】The Chinese name of the story is “ ”. ( )A. 守株待兔B. 未雨绸缪C. 拔苗助长D. 亡羊补牢