麦田常用的除草剂主要有()、取代脲类两类。
参考答案:2,4-D类
I won't go to see the film tonight, because I ______ my ticket.[ ]
A. lost
B. had have
C. bought
D. has lost
揭开维新变法运动序幕的事件是:
A.强学会的成立
B.公车上书
C.同盟会的成立
D.创办《万国公报》