20、(单选、2.5分) To succeed in a scientific experiment,__________ A、one needs being patient person B、patience is to need C、one needs to be patient D、patience is what needed

20、(单选、2.5分)
To succeed in a scientific experiment,__________
A、one needs being patient person
B、patience is to need
C、one needs to be patient
D、patience is what needed

出自：河北工程技术学院大学英语1

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