问题 单项选择题 A1/A2型题

关于近中倾斜基牙固定桥的描述,错误的是()

A.倾斜基牙固定桥难以获得共同就位道

B.基牙倾斜度较大时,有可能产生向近中的推力,必要时应该增加远中基牙数

C.倾斜基牙的倾斜度一般应控制在30°以内

D.轻度倾斜的基牙可通过加大牙体预备量获得共同就位道

E.严重倾斜的基牙可通过正畸治疗、改变固位体设计、根管治疗后改变基牙轴向等方法取得共同就位道

答案

参考答案:B

解析:基牙倾斜度较大时,有可能产生向近中的推力,必要时应该增加近中基牙数。

问答题 简答题
单项选择题

Robert Moody, 52, is an experienced police officer. Much of his work involves dealing with (16) and gang (团伙)problems in the schools of his community. Knowing that many kids often (17) trouble, he decided to do something about it. So in 1991 he began to invite small groups of kids to go fishing with him on his day (18) .

Those fun trips had a(n) (19) impact. A chance encounter in 2000 proved that. One day, (20) working security at a school basketball game, Moody noticed two young guys (21) . He sensed trouble between them. (22) one of them headed toward Moody and gave him a hug. "I (23) you. You took me (24) when I was in fifth grade. That was one of the (25) days of my life. "

Deeply touched by the boy’ s word, Moody decided to create a foundation (基金会)that (26) teenagers to the basics of fishing in camping programs. "As a policeman, I saw (27) there was violence, drugs were always behind it. They have a damaging (28) on the kids," says Moody.

By turning kids on to fishing, he (29) to present an alternative way of life, "When you’ re sitting there waiting for a (30) ," he says, "you can’t help but talk to each other, and such (31) can be pretty deep. "

"Talking about drugs helped prepare me for the peer(同龄人)pressures in high school," says Michelle, 17, who (32) the first program. "And I was able to help my little brother (33) drugs. "

Moody faces (34) in three years, when he hopes to run the foundation full-time. "I’ m living a happy life and I have a responsibility to my (35) to give back," Moody says. "If I teach a kid to

fish today, he can teach his brother to fish tomorrow. \

23().

A. understand

B.hear

C. see

D. remember