Botany, the study of plants, plays a strange role in the history of human knowledge. For many thousands of years it was one field about which humans had little knowledge. It is impossible to know toda
阅读理解 A：Whose gloves are these? Are they yours, Mike? B：No. They’re not mine. Mine are here. I think they’re Li Lei’s. A：Excuse me, Li Lei. Are these gloves yours? C：No. My g
