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In our discussion with people 1._ how education can help them succeed in life, a woman remembered the first meeting of an 2._(introduction)science course 20 years ago. The professor marched into the lecture hall, placed upon his desk a large jar 3._ ( fill) with dried beans（豆）, and invited the students to guess how many beans the jar contained. After listening to shouts of wildly wrong guesses the professor smiled a thin, dry 4._, announced the correct answer, and went on saying, ”You have just learned 5._ important lesson about science. That is: Never trust your own senses.” Twenty years later, the woman could guess what the professor had in mind. He saw himself, perhaps, as inviting his students to start an 6. _(excite) voyage into an unknown world Invisible（无形的）to the eye, 7._can be discovered only through scientific methods. But the seventeen-year-old girl could not accept 8._ even hearthe invitation. She was just beginning to understand the world. And she believed that her firsthand experience could be the truth. The professor, 9._, said that it was wrong. he was taking away her only tool for knowing and was providing her with no substitute. “I remember 10._(feel)small and cruel,” the women says, “and I did the only thing I could do. I dropped the course that afternoon, and I havent gone near science since.”Answers: 1.on 2.introductory 3.filled 4.smile 5.an 6.exciting 7.which 8 or 9. however 10. feeling18中 张弘