唐朝诗歌繁盛的标志年份是哪一年（）
A、贞观元年
B、龙朔3年
C、开元元年
D、开元15年
参考答案：D
A bus is ____________.[ ]
A. slow
B. slower
—Yao Yuan, a disabled woman, won the National Championships Cup last week.
—My goodness! She _______a lot of difficulties!
A．may go through
B．might go through
C．must have gone through
D．ought to have gone through
