【简答题】Recently, silly Mr. Smith received an invitation to a fashionable party. He didn’t know the hostess, ______.
【简答题】人工饲养的“四大家鱼”指的是 青鱼 、 草鱼 、 鲢鱼 和 。
【单选题】Recently, sily Mr. Smith received an invitation to a fashionable party. He didn't know the hostess, _________.
A.
but he still decided to go to the party
B.
and he refused the invitation politely
C.
and he was sad about that
D.
and he thought it was strange
【简答题】健儿糖浆中总黄酮的测定,可用盐酸调 pH 至 ,再用醋酸乙酯萃取后测定。
【单选题】下列情况中属于发热的体温升高的是( )。
【单选题】Mr. Smith is ill. He has been in hospital for a week. He received a bunch of flowers from his colleague Mr. Beth this Monday. He will be well enough next Monday. When should he send a thank-you letter...