Since 1986 enrollments of African Americans, American Indians, and Hispanic Americans in full time engineering programs in the United States has steadily increased, while the number of other students who enter the field has fallen.
                    
                
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                Ahas steadily increased, while the number of other students who enter the field has fallen
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                Bhas steadily increased, while other students entering the field have declined in number
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                Cincreased steadily, while there was a decline in the number of other students entering the field
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                Dhave steadily increased, while the number of other students entering the field has fallen
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                Ehave steadily increased, while that of other students who enter the field fell
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显示答案
        正确答案: D