选择题：根据下面资料，回答Germs are everywhere. You can′t see them, but they are on your des...

根据下面资料，回答 Germs 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, and other things travel around the world, germ