题目

动词填空 1. Betty hopes ________________(be) a singer and travel around the world. 2. Millie decided _________________(not stay) at home. 3.________________(take) a bus is much faster than riding. 4. Thanks for _____________(agree)to let me go on the trip today. 5. Wait here for a moment, I _______________(return) in a minute. 答案：1. to be   2.not to stay  3.Taking  4.agreeing       5.will return下列各图中物质用途与相应性质关系不相符的是（ ）A．氧气具有可燃性，可用于切割金属B．氢气具有还原性，可用于制备单晶硅C．液氮能制冷，可用于超导实验车D．二氧化碳参与光合作用，用作气体肥料