题目

有五种元素X、Y、Z、Q、T。X原子的M层上有两个未成对电子且无空轨道；Y原子的外围电子构型为3d64s2；Z原子的L层的p轨道上有一个是空的；Q原子的L电子层的P轨道上只有一对成对电子；T原子的M电子层上p轨道半充满．下列叙述错误的是（ ） A . 元素Y和Q只能形成一种化合物Y2Q3 B . T和Z各有一种单质的空间构型为正四面体形 C . X和Q结合生成的化合物为离子化合物 D . ZO2是极性键构成的非极性分子根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项为多余选项。 __【1】__People use money to buy food, furniture, books, bicycles and hundreds of other things they need or want. When they work ，they usually get paid in money.Most of the money today is made of metal or paper. __【2】__ One of the first kinds of money was shells.Shells were not the only things used as money. In China, cloth and knives were used. In the Philippine Islands, rice was used as money for a long time. Elephant tusks, monkey tails and salt were used as money in parts of Africa.The first metal coins were made in China. They were round and had a square hole in the centre. __【3】__Different countries have used different metals and designs for their money.__ 【4】__ Sweden and Russia used copper to make their money. Later some countries began to make coins of gold and silver.But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money._ 【5】__The first paper money looked more like a note from one person to another than the paper money used today.Money has had an interesting history from the days of shell money until today. A. The first coins in England were made of tin (锡)．B. But people used to use all kinds of things as money.C. No one knows for certain when people began to use money.D. People strung(串连) them together and carried them from place to place.E. Money, as we know，is all made of paper.F. They began to use paper money.G. Today anyone will accept money in exchange for goods and services.