题目

用所给词和标点连接成句。 101. would, go, you, where (?) 102. Norman Bethune, brave, very, was (.) 103. do, know, you, what, public holiday, is, it(?) 104. can, imagine, how worried, feels, she, I (.) 105. because, Sally missed, her hand, hurt, the final practice (.) 答案：观察下列课内实验回答问题。（1）写出实验一中的化学方程式_______；（2）实验二得出CO2的性质有______：（3）实验三可得出的可燃物燃烧的条件是_________；（4）实验四中能验证铁生锈需要氧气的试管是_____（填甲、乙、丙）。