问题
选择题
水不仅是常见的溶剂，在许多实验中也都用到了水，下图所示均为初中化学课本中的实验，其中有关水的作用描述不正确的是
A．通过广口瓶中进入水的体积观察消耗氧气的量
B．吸收热量，防止瓶底炸裂
C．便于观察气体的收集情况
D．提供热量、隔绝氧气
答案
答案：B
搜题请搜索小程序“爱下问搜题”
水不仅是常见的溶剂，在许多实验中也都用到了水，下图所示均为初中化学课本中的实验，其中有关水的作用描述不正确的是
A．通过广口瓶中进入水的体积观察消耗氧气的量
B．吸收热量，防止瓶底炸裂
C．便于观察气体的收集情况
D．提供热量、隔绝氧气
答案：B
Victor’s hobby was collecting stamps. He had stamps from many countries，like England，Canada and China. Can you guess what people gave him as gifts? That’s right—stamps. Victor’s favorite stamps came from France. 小题1: .He only needed one. That was a 1974 special edition(版). It was very hard to find. He looked for it everywhere. He asked his friends and relatives to help him. 小题2: . It made Victor very sad. “Don’t worry,” his father said to him. “If you have enough patience, you’ll find it one day.” “I hope so,” Victor said. Victor also liked wring. He had a pen friend in France. 小题3: .Victor’s pen friend, Phillip, usually used new stamps to send letters. Sometimes, his mother gave him stamps to use. Once Phillip’s mother gave him a big， green stamp. It looked old. When Victor received the letter， he was very surprised. On the envelope， he looked carefully at the stamp. 小题4: .Victor was so happy. He told his sister，his mother and his father. “You see,” his father said. “You did find you stamp. So，it’s good to have to things in life.” “ What are they?” Victor asked. “Friends and patience.” He answered.
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