题目信息
Until recently, trade flows were of interest mainly to economic experts and executives of large corporations, but since the past few years, the movement of goods and services across national boundaries have become the subject of intense public attention all over the world.
A:since the past few years, the movement of goods and services across national boundaries have become
B:the movement of goods and services across national boundaries since the past few years became
C:the movement across national boundaries of goods and services over the past few years have become
D:over the past few years, the movement across national boundaries of goods and services are becoming
E:over the past few years, the movement of goods and services across national boundaries has become
参考答案及共享解析
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已选答案：
正确答案：
E:over the past few years, the movement of goods and services across national boundaries has become
考点：修饰+主谓一致
A错，因为主谓不一致。主语movement谓语动词应该用has
B错。since the past few years作定语修饰boundaries,改变句子的意思。时态应该用现在完成时。
C错。同B选项。另外，谓语动词应该是has become
D错。谓语动词时态、数不当。
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