单项选择题

Countless divorced politicians would have been elected out of office years ago had they even thought of a divorce, __________ gotten one.

A．leave alone
B．leave behind
C．let alone
D．let down
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单项选择题
According to the passage, why do we have futures contracts
A．To take delivery of a given commodity.
B．To make the market against price fluctuations stable.
C．To ensure delivery of a given commodity at market prices.
D．To allow for some price certainty before a commodity is delivered.
单项选择题
The main reason that futures are risky in the cattle industry is due to __________.
A．dropping prices of cattle
B．the uncertainty of the economy
C．insiders' manipulating the prices
D．price fluctuations in the price of cattle
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