【单选题】
A <{p}><{font _mstmutation="1" _msthash="20512" _msttexthash="14235"}>60%<{/font}><{br/}><{/p}>
B <{p}><{font _mstmutation="1" _msthash="20513" _msttexthash="14053"}>40%<{/font}><{br/}><{/p}>
C <{p}><{font _mstmutation="1" _msthash="20514" _msttexthash="14326"}>70%<{/font}><{br/}><{/p}>
D <{p}><{font _mstmutation="1" _msthash="20517" _msttexthash="13962"}>30%<{/font}><{br/}><{/p}>
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