7.science is stilllargely ignorant ______ the causes of many kinds of cancer.A)aboutB)withC)ofD)to请问为什么选C呢,请帮我详细的解答一下,谢谢

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7.scienceisstilllargelyignorant______thecausesofmanykindsofcancer.A)aboutB)withC)ofD)to请问为什么选C呢,请帮我详

7.science is stilllargely ignorant ______ the causes of many kinds of cancer.A)aboutB)withC)ofD)to请问为什么选C呢,请帮我详细的解答一下,谢谢
7.science is stilllargely ignorant ______ the causes of many kinds of cancer.
A)about
B)with
C)of
D)to
请问为什么选C呢,请帮我详细的解答一下,谢谢

7.science is stilllargely ignorant ______ the causes of many kinds of cancer.A)aboutB)withC)ofD)to请问为什么选C呢,请帮我详细的解答一下,谢谢
be ignorant of不知道,不了解
科学还是很大情况下不了解很多种癌症的起因