【单选题】A nocturnal(夜间活动的)moth has become the first animal known to see colours in the dead of night. The moth uses this visual talent to find yellow, nectar-packed flowers in the dark, but the finding sugges...
【单选题】听力原文:W: Good evening, sir. Welcome to the Royal Fantasy Hotel. How can I help you? M: My name's Jeff Lin, and I have a reservation for this week. I'll be attending the electronics exhibition beginning...