World population will continue rising from the current 5 billion until about 2050, but if the trends of the 1980s continue, it w

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问题 World population will continue rising from the current 5 billion until about 2050, but if the trends of the 1980s continue, it will ______ at about 9 billion.

选项 A、level up
B、level off
C、level on
D、level down

答案B

解析

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考博英语

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World population will continue rising from the current 5 billion until about 2050, but if the trends of the 1980s continue, it w

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Lookatthechartsbelow.Theyshowthesalesofcarsindifferentdepartmentstoresduring2006,2007and2008.Whichchartdoe

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Surprisinglyenough,modernhistorianshaverarelyinterestedthemselvesinthehistoryoftheAmericanSouthintheperiodbefo

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