唐代先后有两位公主出嫁吐蕃，对唐蕃关系产生了重大影响，她们是（）。

Everyone worries. But how do you deal with your worries? Whether your worries are big or small, you can take these three steps to do with your worries:

1. Try to find out what you’re worded about

Sometimes, you will know what you’re worried about. Other times, you might not. Try to find it out first; if you can’t, you can ask for help.

2. Think of ways to make it better

There is always something you can do to help you feel less worded. Sitting there worrying is no fun and it won’t solve your problem.

Grades at school are often top worries for kids. If you’re worded about grades, ask yourself these questions:

★ Why are grades important? What do grades mean to me?

★ How do I get ready for class? Do I go over my notes even when there isn’t a test?

★Do I have a good place to do my homework?

★ Have I tried different ways of studying?

If your worry is about a fight you had with a friend, you might write down all the things you could do: write a note to him or her, invite him or her to a basketball game, say sorry to him or her, etc. Once you have a list of things you could do, you can choose the one that gets your friend back.

3. Ask for help

When you’re worried, it can help to find someone to talk to. You can ask your parents, friends, or teachers for help.

小题1:How many steps of doing with your worries are mentioned(提及) in the passage?

A．Two.

B．Three.

C．Four.

D．Seven.小题2:When you don’t know what you’re worried about,_________

A．you should try to find it out.

B．you can’t ask for help

C．you don’t need to think of ways

D．you can sit there worrying小题3:If you’re worried about grades, you can ask yourself these questions except “_____”

A．Why are grades important?

B．What do grades mean to me?

C．How do I get ready for class?

D．Why don’t my friends like me?小题4:According to the passage, what will you do if you have a fight with your friend?

A．Make a new friend.

B．Don’t talk to him or her any more.

C．Have another fight with him or her.

D．Invite him or her to a basketball game.小题5:The passage mainly tells us_______________.

A．who is often worried

B．when people are worried

C．What to do with our worries

D．what kind of worries people have

生活中常用的放大镜是______ 镜，用它来观察细小物体时，是利用了它可以成正立、______ 的虚像的原理；同对还可以利用它制作成眼镜调节______ 眼（选填“近视”、“远视”）的视力问题．

对实验结果的认识正确的是（　　）

A．实验结果不一定与假设一致，但实验结论一定支持假设

B．实验结果一定与假设一致，实验结论一定支持假设

C．有时实验没有结果

D．实验结果不一定与假设一致，实验结论也不一定支持假设

钠（Na）是一种非常活泼的金属，常温下能与O₂、H₂O等物质反应，加热时能与CO₂反应生成C、CO、Na₂O和Na₂CO₃四种物质，其中Na₂O是白色固体，遇水可生成NaOH。下列有关说法不正确的是（    ）

A. 钠应密封保存

B. 钠着火后不应该用二氧化碳灭火器熄灭

C．钠与CO₂的反应需在通风厨中进行   

D. 钠与CO₂反应生成的白色固体加水溶解后，滴加少量盐酸一定会产生气泡

什么叫克劳斯工段热开工？