【单选题】Can you find out what is missing in the story ? A king loved buying and looking at his beautiful clothes. Two brothers came to the city to make special clothes for the emperor. But the emperor had to ...
【简答题】Germs(细菌) are everywhere. You can’t see them, but they are on your desk, on your computer, and even in the air! Like people, germs move around the world. They fly with us on planes. When food, clothes...