题目内容：
阅读材料，回答题。In our discussion with people on how education can help them succeed in life, a woman remembered the first meeting of an introductory 36 course about 20years ago.The professor 37 the lecture hall, placed upon his desk a large jar filled with dried beans(豆),and invited the students to 38 how many beans the jar contained. A fret 39
Shouts of wildly wrong guesses the professor smiled a thin, dry smile, announced the 40
Answer, and went on saying, ”You have just 41 an important lesson about science. That is: Never 42 your own senses.”
Twenty years later,the43 could guess what the professor had in mind. He 44 himself, perhaps, as inviting his students to start an exciting 45 into an unknowns world invisible(无形的) to the 46 , which can be discovered only through scientific 47 . But the seventeen-year-old girl could not accept or even 48 the invitation. She was just 49 to understand the world .And she 50 that her firsthand experience could be the 51 . The professor, however, said that it was 52 . He was taking away her only 53 for knowing and was providing her with no substitute(替代). “I remember feeling small and 54 .” The woman says, “and I did the only thing I could do. I 55 the course the afternoon, and I haven’t gone near science since.” A．art
B．history
C．science
D．math
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