今年我市的化学实验操作考试有“制取并收集一瓶二氧化碳”的考题． （1）指出标号①的仪器名称 ； （2）实验室制取二氧化碳选
— Mr. Smith was really helpful when you were in financial difficulty during those years. — Definitely. I can never appreciate his kindness ________. A. seriously B
红磷在耐高温的密闭容器中（内含空气）加热，能正确表示容器里所盛物质总质量变化的图象是（ ）
I can’t go with you to the cinema tonight, for I have a test ________. A．prepared for B．to be prepared for C．to prepare for
2009年8月我国台湾省遭受强台湾“莫拉克”袭击，造成巨大的财产损失和人员伤亡，结合图6，回答下面试题9.此次台湾重灾区的人员伤亡主要是由_______
---I have to be off right now. ---What a pity!I______ you could stay a little longer with us. A. thought B. am thinking C. think D.was thinking
