专四专八考试

解析：It has been estimated that the eart

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【单选题】It has been estimated that the earth's surface temperature has increased
______ one quarter to three quarters of a degree since 1850. ~


A．to
B．by
C．at
D．with


网考网参考答案：B
网考网解析：
此题考查动词与介词的固定搭配。据估计自1850年以来地表温度增长了1/4到3/4度。increase by 是固定用法，意为“增长了”。by后跟具体的数据，其余三个介词都不与increase搭配。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>

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