题目

Summer holiday is coming. Some kids have already made great plans for the summer.Travel for funMany teens say they will travel with their parents during the holidays. Fan Zhe from Yantai will go to Shanghai with his parents. “I will need a break, as I will be really tired of tests by that time,” said Fan. Gao Yuan will spend his holiday far away from his parents. From August 10, the 15-year-old boy and 20 other students at Shanghai Weiyu Junior Middle School will spend 18 days in Australia.Summer studiesSome teens are spending the summer studying. Xing Wei from Tianjin and Zhou Xiaoli下图是CH4、CCl4、CH3Cl的分子球棍模型图。下列说法正确的是 [     ]A．CH4、CCl4和CH3Cl都是正四面体结构 B．CH4、CCl4都是正四面体结构 C．CH4和CCl4中的化学键完全相同 D．CH4、CCl4的结构相同，性质也相同