一

　　in a telephone survey of more than 2，000 adults，21% said they believed the SUN revolved (旋转)around the earth. an 71 7% did not know which revolved around 72. i have no doubt that 73 all of these people were 74 in school that the earth revolves around the sun; 75 may even have written it 76 at test. but they never 77 their incorrect mental models of planetary (行星的) 78 BECause their every day 　observations didn’t support 79 their teachers told them: people see the sun moving 80 the sky as 　　morning turns to night，and the earth seems stationary (静止的) 81 that is happening. students can learn the right answers 82 heart in class，and yet never combined them 83 their working models of the world. 　the objectively correct answer the professor accepts and the 84 personal understanding of the world can 85 side by side，each unaffected by the other.

　　outside of class，the student continues to use the 86 model because it has always worked well 87 that circumstance. unless professors address 88 errors in students’ personal models of the world，students are not 89 to replace them with the 90 one.

　　71.a.excessive b. extrac. additionald. added

　　72.a.what b. whichc. thatd. other

　　73.a.virtually b. remarkablyc. ideallyd. preferably

　　74.a.learned b. suggestedc. taughtd. advised

　　75.a.those b. thesec. whod. they

　　76.a.on b. withc. underd. for

　　77.a.formed b. alteredc. believedd. thought

　　78.a.operation b. positionc. motiond. location

　　79.a.how b. whichc. thatd. what

　　80.a.around b. acrossc. ond. above

　　81.a.since b. soc. whiled. for

　　82.a.to b. byc. ind. with

　　83.a.with b. intoc. tod. along

　　84.a.adult’s b. teacher’sc. scientist’sd. student’s

　　85.a.exist b. occurc. survived. maintain

　　86.a.private b. individualc. personald. own

　　87.a.in b. withc. ond. for

　　88.a.general b. naturalc. similard. specific

　　89.a.obliged b. likelyc. probabled. partial

　　90.a.perfectb. betterc. reasonabled. correct