单选题：Whathappenedtothecropyieldssince1980?

  • 题目分类：英语四级
  • 题目类型：单选题
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题目内容：

Whathappenedtothecropyieldssince1980? A．Theyieldsofallthecropshavebeendeclining.
B．Theyieldgrowthofsomecropsbecomesslower.
C．Theglobaltemperaturesbecomenotsostableasbefore.
D．Policyandeconomicfactorsbegantoaffectcropyields.

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(操作员：系统主管；账套：101账套；操作日期：2015年1月1 日)新增会计科目。科目编码：6602—01科目名称：办公费辅助核算：单位

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