问题
不定项选择题
关于Na2O2和Na2O下列说法不正确的是 [ ]
A．Na2O2比稳定Na2O
B．Na2O不能生成Na2O2
C．均属于碱性氧化物
D．均与CO2反应
答案
BC
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关于Na2O2和Na2O下列说法不正确的是 [ ]
A．Na2O2比稳定Na2O
B．Na2O不能生成Na2O2
C．均属于碱性氧化物
D．均与CO2反应
BC
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| Mr Smith was an old miser (守财奴). He had a lot of 1 , but he never bought anything 2 . He and his wife lived in an old house outside the town. He often went to the shop 3 in order to (为了) save some money. In the 4 , as soon as it was dark in the room, he 5 . He had no TV but bought a cheap radio and often 6 the advertisements. The old man had no 7 , his wife was often ill. He wouldn't send her to the hospital. He thought he would 8 much to the doctors if they looked her over. He bought a few medical books and bought some medicine (药) 9 her. One night, Mrs Smith felt unwell, she had got a bad headache. She asked her husband to 10 a doctor, but he didn't agree (同意). He brought out some pills and made her 11 them. But it was no use. The old woman began to 12 at home. He locked the door and went in another room and 13 there. The next morning, when he woke up, he came into her 14 to see if she was all right. But he found the poor woman had died. He hurried to the telephone, but 15 his mind at once. He ran out and shouted to servant (佣人), "Don't cook breakfast for Mrs Smith this morning, Linda!" | ||||
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