题目

在元素周期表中，镁元素的信息如下图所示，对图中信息解释不正确的是（） A . 原子序数为12 B . 核外电子数为 24 C . 元素符号为Mg D . 相对原子质量为24.31 答案：B根据下列句子及所给汉语注释，在横线上写出空缺处单词的正确形式。（每空只写一词）小题1:The ________ (行李) can be kept in the room near the waiting-hall before your train arrived.小题2: Let’s ______(庆祝) him on his winning the prize.20090515 小题3:The surface of the desk feels very_______（光滑）.小题4: His _____________ (奉献) to teaching gained the respect of his students.小题5:He looked at himself in the mirror and began ___________ (刮) .小题6:_____________(激动地), he ran to his father for a birthday present.小题7:They furnished their house with red ________(地毯). 小题8:_________ (如今), many young people spend at least 3 hours on the Internet.小题9:All of a sudden an idea ________(闪) in her mind that she decided to send an e-mail to him.小题10: The man is in his _________(九十)，but he has a clear brain.