单项选择题

A．Piracy is an easy thing to commit.
B．Invention usually needs heavy cost.
C．Patent is useful but not practical.
D．Inventions are difficult to spread.
<上一题 目录 下一题>
热门 试题

单项选择题
A．He finds history books difficult to understand.B．He has to read a lot of history books.C．He doesn’t like the history course.D．He has lost his history book.
A．He finds history books difficult to understand.
B．He has to read a lot of history books.
C．He doesn’t like the history course.
D．He has lost his history book.
单项选择题
A．She bought the ticket on impulse.B．She meant to ignore the appointment with her professor.C．She wanted to invite her professor to the concert.D．She wanted to please the man.
A．She bought the ticket on impulse.
B．She meant to ignore the appointment with her professor.
C．She wanted to invite her professor to the concert.
D．She wanted to please the man.
相关试题