唾液维持口腔PH是由于唾液的（）。 A.消化作用 B.清洁作用 C.缓冲作用 D.保

多根多处肋骨骨折可出现（）
胃破裂可出现（）
胰腺损伤可出现（）

A.膈下游离气体

B.反常呼吸

C.耳鼻流血

D.血淀粉酶升高

E.腹膜后积气

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Many people find it hard to make friends.  小题1: All it takes is for you to get out of your shell and remember that if you love yourself, others will too. Especially being a teen, making friends can be hard or easy depending on several factors．

Relax. It’s all about confidence---if you are nervous or try too hard to look cool you’ll just act strange. So you won’t make many friends. You will stand out as overdoing(做得过分) something．

You have to act as you have had plenty of friends in the past, so even the “cool” ones will want to speak to you. 小题2: Be relaxed．People will like you for passing a peaceful energy．

Make the first move. Don’t be shy because it won’t help you in anything. Look around for people that seem interesting, and go up to talk to them. A good subject to talk about to anyone is music because almost everybody likes music. 小题3:Try not to get deep when you are first meeting somebody.

小题4: Everyone likes to be heard. So give attention to what others say, look straight in their eyes and show you’re paying attention. If this person feels that you’re listening to him, your new friend will enjoy your company more．

Develop friendships. You may talk to someone now but soon they’ll forget you if you stop．小题5: Say their name as often as you can. When you greet them, say things like, “Hey Alex!”，“What’s going on, Sarah?’’ If you do that every day, they’ll be happy that you care about them and remember them, so they won’t forget you and you will be good friends．

A．It is really not．

B．Be a good listener．

C．Other topics could be movies or sports．

D．Making one or two best friends is usually enough．E. Invite your new friends to go out together with you．

F. Think of good reasons why someone would like to meet you．

G. You’d better take a time to say hi to them every day and ask how they are doing．

行为能力

如图是眼球的模式图，请根据图回答下列问题：

（1）有的同学沉迷于上网，不但影响了学业的发展，而且因长时间近距离注视电脑显示屏，容易导致[E]______  凸度增大且不能恢复原状而形成______．

（2）眼球的[J]______相当于照相机内的胶卷．

（3）某人的眼球结构完好无损，但他也是盲人，这很可能是他的[M]______受损，导致图象信息无法传导到______ 所致．