问题 单项选择题

为提高全口义齿的固位和稳定,制取无牙颌印模时哪点是次要考虑的()

A.尽可能扩大印模面积

B.取功能性印模

C.使组织均匀受压

D.使用藻酸盐印模材料

E.保持托盘位置不动

答案

参考答案:D

解析:藻酸盐和热塑性印模料都可以。

完形填空

Mosquitoes(蚊子)can be seen everywhere all over the world, especially in summer. And there are more than 2,500 kinds of them.

__43_likes the mosquito, but the mosquito may like you. She thinks your blood is delicious. She? Yes, she. It’s true that the male(雄性)mosquito doesn’t bite(咬)and only the female mosquito bites because she   44  blood(血液)to lay eggs. She is always   45  things or people she wants to bite. If she likes what she finds, she will bite. But if she doesn’t like your blood, she   46 to someone else for more delicious blood. Next time a mosquito bites you, just remember you’re different from others.

If the mosquito likes you, she will land on your body   47  letting you know. She bites you   48  quickly and quietly that you may feel nothing. After she bites, you will have an itch(痒)on your body because she puts something from her mouth together with your blood. By the time the itch begins, she has   49  .

And then what happens? Well, after her delicious   50  ,it’s dark. The mosquito feels   51 . She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs,   52  eggs.

小题1:A.Everyone               B. No one              C. Someone

小题2:A.needs                  B. need                C. want

小题3:A.finding                 B. wants               C. looking for

小题4:A.will turn                B. turns to             C. turn

小题5:A.with                   B. without              C. after

小题6:A.so                     B. such                C. very

小题7:A.flies away               B. flew away           C. flown away

小题8:A.breakfast               B. dinner              C. lunch

小题9:A.tiring                  B. tired                 C. relaxing

小题10:A.3 hundreds              B. hundred of           C. hundreds of

单项选择题