单选题
49.
Japan and Russia could lose between ______ of their population by 2100.
A、
half-one and two-third
B、
one-half and two-thirds
C、
half-one and second-thirds
D、
one-half and second-thirds
【正确答案】
B
【答案解析】
分数表达题。表示分数时，分子要用基数词，分母用序数词。分子如果是1以上，表示分母的序数词则需用复数形式，故本题选B。
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