【简答题】When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is de...
【简答题】选择以下单词,填入下面短文中 invent, doubt, mention, nearly, website, all of sudden It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may ______ thin...
【简答题】When I arrived at the Banner 1 ______________ I was so impressed by the fact that they came to me. I didn’t really want to 2. ______________. They came up to me and said, “Well, is there something we ...
【判断题】Manufacturers use standards so they can market their products to a wider audience than if they came up with separate – and perhaps incompatible – specifications.