In1900,theUnitedStatesrankedfirstintheworldintheproductionof________.
A、coalA
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In “ Song of Myself ” , Whitman writes that ________.
ThethemeofThanksgivinghasalwaysbeen________.
For electoral purposes Britain is divided into 659 constituencies, each of whichreturns ________to the House of Commons.
The average life expectancy of the Red Indians is ________.
The Mississippi, which is sometimes called ________, has played a vital role in the history of the United States.
