问题 单项选择题 A1型题

制作好的全冠熔模需进行颈缘再修整,其目的是 ()

A.加长颈缘线,防止收缩变短

B.加厚颈部

C.确保颈缘形成一微小空隙

D.减薄颈部

E.提高熔模颈缘的精确度和密合度

答案

参考答案:E

解析:制作好的全冠熔模需进行颈缘再修整,其目的是提高熔模颈缘的精确度和密合度。方法为:制作好冠的熔模后,用锐利的小刀将熔模颈部切除少许,再选用收缩小的颈缘蜡重新塑型,使熔模形成自然连续、与患牙颈缘线完全吻合一致、并且厚度适宜的熔模边缘。

阅读理解

阅读短文,根据其内容,选择最佳选项完成下列各题。

The quickest way to make friends with others is to smile (微笑). When you smile, people think you are friendly and easy to talk to. It may not be easy to smile at first, but you can practice it in front of a mirror (镜子). When you look at yourself in the mirror, think about the difference between a smiling face and a sad or an angry face. Most people will stay away from(躲避) a sad or an angry face.

The easiest way to start a conversation with someone is to say something nice about him or her. For example, you can comment on someone’s great answer to a teacher’s question, a great prize, a nice shirt, etc. Think about how great you feel when someone says something nice to you. Doesn’t it make you want to keep talking with that person? Also, ask your new friends questions about themselves. For example, who are their favorite singers and what do they do after school are all good questions to start a conversation.

小题1:__________ is the quickest way to make friends with others.

A.Smiling

B.Practicing

C.Asking questions

D.Saying nice words小题2:When you start a conversation with a new friend, you’d better NOT talk about his or her __________.

A.nice shoes

B.great answer

C.good prize

D.bad grade小题3:The underlined words “comment on” mean “__________” according to the passage.

A.信赖

B.推测

C.评论

D.批评小题4:The following questions are good to start a conversation EXCEPT (除……之外)        “__________”.

A.How do you go to school?

B.What do you think of my new hat?

C.What is your favorite instrument?

D.How do you spend your holiday?小题5:According to the passage, we can learn that __________.

A.it is always easy to smile with others

B.a smiling face helps people to be more healthy

C.a smiling face and a sad or an angry face aren’t different

D.people usually feel great when hearing nice words about them

填空题