【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...
【简答题】理解下列词组的意思,并用其填空 face value; conservative tastes; heavy make-up; bright colours; correct tone; highbrow subject; popular belief; 1 Both of us have rather ___________________, so we're unlikely to buy ...