题目

阅读理解。 Hawaii has always been a magic name to people who like traveling. People from all over the world dream of seeing the beautiful islands in the middle of the ocean. It's always one of their dreams to watch the sun going down. The sun drops like a ball of bright fire into the sea, and it drops so quickly that you can even see it move. About two thousand years ago, the first people went to Hawaii in a very small boat. They found the beautiful white sand beaches and the waving palm trees. But it was difficult for people to go to Hawaii at that time. And there were no big hotel下列有关元素周期表中元素性质的叙述正确的是?A.同主族元素从上到下,非金属性逐渐减弱,单质的熔点逐渐增高?B.元素的最高正化合价在数值上均等于它所在的族序数?C.同周期元素的原子半径越小,越难失去电子?D.元素的非金属性越强,它的最高价氧化物的水化物的氧化性越强?
英语 试题推荐