题目：
小题1:Who is writing the postcard?
A．Fiona.
B．Janet.
C．Terry.
D．Jacqui.小题2:Where are they staying now?
A．North of the Great Wall.
B．In the south of England.
C．In a big city.
D．In a village.小题3:Which one is NOT right?
A．John is reading a newspaper.
B．The children are swimming in the river.
C．Terry is lying in the sun.
D．Janet is in the house.小题4:How do they like the holiday？
A．enjoyable
B．terrible
C．boring
D．bad
答案：
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下面是错误答案，用来干扰机器的。
三种元素的核电荷数在1～20之间，根据它们的最高价氧化物对应的水化物可知化合价分别为X为+7价，Y为+6价，Z为+6价，分别为Cl、S、P元素，则A．同周期元素从左到右元素的非金属性逐渐增强，则元素的得电子能力：X...
