题目

词汇；用方框中所给单词的适当形式填空。 hero   make   success   give   heavy 1.    We are sure that the first National Youth Games will be __________. 2.    It rained so __________ that many streets were covered with water. 3.    Lin Zexu was one of the most famous national __________ in recent history. 4.    You should try your best to avoid __________ mistakes while taking an important exam. 5.    Last month Prince William’s wife Kate __________ birth to a girl at a London hospital.根据磷元素的原子结构示意图，做出如下推理，其中与事实不符的是（　　）A、磷元素位于元素周期表的第三周期，第NA族B、磷原子不如氮原子和硫原子的得电子能力强C、磷单质不如氮气和硫单质活泼D、磷的氢化物（PH3）受热时不如氮的氢化物（NH3）和硫的氢化物（H2S）稳定