题目内容
25. Potato chips were invented by mistake.(改为一般疑问句)
_potato chips _ by mistake?
25. Were，invented
( )17. We know a lot of useful things were invented_Thomas Edison.
A. as B. for C. to D. by
8. the 6th century_
9.直到......才 . 10.民族饮品_
( )20. I think one of the most annoying inventions_the alarm clock.
A. are B. is C. were D. was
30.尽管现在许多人了解茶文化，但是中国人无疑是最懂茶内涵的人。
Even though many people now know about tea culture, the Chinese are _
_the ones who best understand the nature of tea.
( )13. Potato chips can_very thin.
A. cut B. cook C. be cut D. be cooked
30. Stars often guide us to the right direction, (guide. . . to)
造句：他的工作是把顾客领到他们的桌子边。_
6. Many people believe that tea was first d_ nearly 5,000 years ago.
19.以前人们常常在遇到麻烦时放孔明灯。
People___out sky lanterns when they were in trouble.
