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4．a(chǎn)bacus 【查看更多】

 

題目列表(包括答案和解析)

The abacus was invented ________ by Chinese people.


  1. A.
    in the sixth Century
  2. B.
    in the sixtieth Century
  3. C.
    in the sixteenth Century
  4. D.
    in the six Century

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The abacus _____ in _____ century by Chinese.

[     ]

A. invented; six
B. was invented; the sixth
C. invented; the sixth

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The abacus _____ invented in the sixth century by Chinese people.
[     ]
A. be
B. is
C. was
D. were

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The abacus (算盤(pán)) ______ used in China centuries ago.

[    ]

　　A. was   B. were   C. had been   D. have been

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--When _____ the abacus _____?   -- In the sixth century by the Chinese people.

A．is, inventedB．did, inventC．was, inventedD．does, invent

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