问题
单项选择题
无牙颌的印模方法中错误的是（ ）。
A．用印模膏取一次性印模
B．用印模膏取初印模
C．用印模膏做个别托盘
D．用旧义齿做个别托盘
E．用藻酸盐印模材取终印模
答案
参考答案：A
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无牙颌的印模方法中错误的是（ ）。
A．用印模膏取一次性印模
B．用印模膏取初印模
C．用印模膏做个别托盘
D．用旧义齿做个别托盘
E．用藻酸盐印模材取终印模
参考答案：A
| 完形填空 | |||
| Thomas Edison was 1 scientist. He was born in 1847. When he was a child, he liked to 2 how things worked. He was in school for only three months and he asked his teacher a lot of strange questions. 3 had nothing to do with 4 . The teacher thought the boy was not bright and was not worth teaching. When he 5 this to Edison's mother, she took her son 6 school. As she had been a teacher, she 7 him herself. The boy 8 . Soon he was interested in science. When he was ten, Fdison 9 a chemistry lab for himself. After that he never stopped searching for 10 to do things. | |||
| ( )1. A. English ( )2. A. find ( )3. A. The most ( )4. A. his lessons ( )5. A. said ( )6. A. to go to ( )7. A. looked after ( )8. A. didn't study well ( )9. A. bought ( )10.A. newer and better ways | B. French B. find out B. Most of them B. his parents B. spoke B. to leave for B. taught B. read a lot B. put B. more and more radios | C. a Japanese C. look for C. Many of the students C. his teachers C. talked C. leaving for C. studied C. wrote very much C. built C. better chemistry labs | D. an American D. ask D. One of them D. his life D. told D. out of D. taught to D. do lots of exercises D. visited D. new and cheapest ways |