To succeed in a scientific experiment .
A. carefulness is need
B. carefulness is one needs
C. one needs to be careful
D. one need being careful
网友回答
A. carefulness is need
B. carefulness is one needs
(答案→)C. one needs to be careful
D. one need being careful
解析：要想在科研实验中取得成功……, 显然句子缺少逻辑主语,所以A,B两项排除. one是第三人称单数,所以C,D中显然是C正确. 另外: need后面接动名词主动形式表被动意义,与need后跟不定式被动意义相同.如: The bicycle needs repairing. = The bicycle needs to be repaired.