A：A能与热水反应产生H2，B 必须与水蒸气反应才产生H2
B：A和B都是元素周期表的主族金属元素，A在 B的左下方
C：1mol A能从酸中置换出1.5molH2，1mol B能从酸中置换出1molH2
D：A和B都是元素周期表的主族金属元素，B的最高价氧化物的水化物不溶于水且具有两性，能被A的最高价氧化物的水化物溶解
阅读判断。根据短文内容，判断下列句子的正与误。
Long long ago, there was no paper in the world. People had to write characters(汉字) in bamboo slips or stones.Then there was a man named Cai Lun who was a Chinese man. He made people use all kinds of things to invent paper. From then on, people can use paper to write on. Paper is a great invention. We always remember the great inventor Cai Lun. Nowadays paper is very useful in our work, study and our life.It really means a lot to human beings
I woke up with______ bad headache, yet by______ evening the pain had gone.
My parents want me to get further study to be ________ an engineer _______ a scientist, ________ I would like to be a famous surgeon doctor.
