问题 单项选择题 A1/A2型题

符合活动义齿下颌托盘选择要求的是()

A.颊侧边缘应与唇颊沟等高

B.舌侧边缘应与口底等高

C.宽度与下颌牙槽嵴等宽

D.后缘应盖过磨牙后垫

E.以上均是

答案

参考答案:D

解析:托盘的大小、形态必须与牙弓大小、形态相一致,托盘内面与组织间约有3~4mm间隙以容纳印模材料;托盘边缘止于距离黏膜皱襞2mm处,且不能妨碍系带、唇、舌及口底软组织的功能活动。

完形填空

Kate Spotz is a 22-year-old girl from America. She wants to cross the Atlantic Ocean by boat. If she__ ___ , she’ll be the youngest and the first American to finish the 2500-mile trip.

Spotz began___ ____ when she was at university. She has swum all the way down the 325-mile Allegheny River and traveled by bike from Seattle to Washington.

Spotz knows that she______ see some unexpected(想不到的) things during the trip. It will be very______ if she meets very bad weather in the middle of the sea. _____ she believes that she can deal with all the difficulties.  “I had never thought I could run 26 miles,” she said. “But once I ______ it, I realized that maybe I could do something even______.”

Spotz wants to collect______ for an organization called“ Blue Planet Run” by going on this trip. The organization offers free and safe drinking water to people who need it.

It’ll take her about three months to finish this______. Good luck to this______ girl and best wishes to her!

小题1:A. dreams .            B. misses                   C. succeeds

小题2:A. sailing                B. biking                   C. swimming

小题3:A. must                B. may                    C. should

小题4:A. dangerous             B. boring                   C. exciting

小题5:A. If                   B. But                     C. So

小题6:A. saw                  B. met                     C. finished

小题7:A. easier                 B. more difficult             C. more dangerous

小题8:A.food                  B. money                   C. clothes

小题9:A.plan                  B. lesson                   C. trip

小题10:A. brave               B. modern                  C. polite

选择题