题目内容
1. No one knows (确切) how old the man is.
1. for certain
( ) 3. Scientists are doing experiments in order more of Mars.
A. exploring B. to explore C. explore D. to exploring
1. S there aren't computers in our lives
― what will happen?
1. This is the only model is made by hand.
1. Jeans designed for workers in the 1850 s are now popular with all people.(改为同义句）
Jeans for workers in the 1850s are now popular with all people.
1. The traffic is busy now. They m be here on time, but I can't be sure.
( ) 1. China is country to send a manned spaceship into space.
A. the first B. the second
C. the third D. the fourth
1. The music sounds ( excite ).
( ) 3. The earth is a planet which goes around the sun.
A. walks B. plays
C. travels D. change
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