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【单选题】
Which of the following statements is not true for an effective offer?A.
An offer must be a proposal for concluding a contract.
B.
It must be addressed to specific person(s).
C.
It must be sufficiently definite to include description of commodity, quantity, price, payment, shipment and insurance, etc.
D.
It should indicate the offeror's intention to be bound in case of acceptance.
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举一反三
【单选题】It can be seen from the passage that ______.
A.
the capacity to generate electricity is the distinctive characteristic of the fish
B.
the current travels in an upward direction from the positive side to negative side in torpedo's electric cells
C.
some fish can produce enough electricity to drive a number of electric motors
D.
the torpedo' s electric cells have a shape with six sides
【单选题】There on the shore you can see a steam powered ship covered with dirt _____, waiting to be taken apart. [ ]
A.
lay in ruins
B.
lie in ruin
C.
laid in ruins
D.
lie in ruins
【单选题】Steam can generate electricity by turning an electric generator.
A.
change
B.
produce
C.
stop
D.
spread
【单选题】It can be inferred from the passage that by 1870 ______.
A.
the steam engine had been invented
B.
a national commission on agriculture had been established
C.
the U.S.horse population was about 10 million
D.
technology began to be more economical
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