In the late 1960s motorcyclists in California USA (16 ) to go out in the countryside and ride their machines up and down mountain tracks just for fun. They made (17) noise and did a lot of dama

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16. A. had been used B. has been used C. used D. was used

17. A. many B. much C. any D. some

18. A. as well B. either C. too D. as well as

19. A. was born B. is born C. were born D. are born

20. A. when B. how C. which D. where

热搜:在公制与英制换算中,1in等于()。