单项选择题

The greatest risk for rickets is in______ breastfed infants who are not supplemented with 400 IU of Vitamin D a day.

A．exceptionally
B．practically
C．exclusively
D．proportionately
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单项选择题
The government is spending hundreds of billions extending the electricity _______to every remote village for the improvement of farmers' livelihoods.
A．grid
B．grant
C．grove
D．grandeur
单项选择题
A succession of ______visits by the two countries' leaders have taken their relations out of the cooler over the past 20 months.
A．reciprocal
B．receptive
C．repulsive
D．Redundant
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