题目

属于加成反应的是（    ） A.乙烯通入溴水中使溴水褪色                  B.乙烯使高锰酸钾酸性溶液褪色C.四氯化碳与溴水混合振荡，静置后溴水褪色    D.在磷酸作催化剂时乙烯和水反应 答案：AD读句子，从句子中找出两个含有例词画线部分读音的单词。1. Turn right at the traffic lights.night ________ ________ 2. The bird is flying in the sky.by ________ ________ 3. It's time to ride a bike.like ________ ________ 4. I will go on a trip to Beijing.sit ________ ________ 5. The story is about a big city.ready ________ ________