题目

In our discussion with people on how education can help them succeed in life, a woman remembered the first meeting of an introductory _______ course about 20 years ago.The professor _______ the lecture hall, place upon his desk a large jar(广口瓶) filled with dried beans, and invited the students to _______ how many beans the jar contained. After _______ shouts of wildly wrong guesses the professor smiled a thin, dry smile, announced the _______ answer, and went on saying, “You have just _______ an important lesson about science. That is: Never _______ your own senses.”Twenty years late----_____he dropped out of school? ----His family has run into financial difficulties.A．Why was it thatB．Why was thatC．Why was that itD．Why was it