Perhaps the oldest theories of business cycles are _______that link their cause to fluctuations of the harvest.
(A) whatever
(B) everything
(C) those
(D) them

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統計： A(63), B(91), C(193), D(23), E(0) #430054

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#696381
Perhaps the oldest theories of the business cycle are those that link their cause to fluctuations of the harvest. Since crops depend upon soil, climate, and other natural factors that in turn may be affected by biological or meteorological cycles, such cycles will transmit their effects through the harvests to the rest of the economy.
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