拍彩色照片时。眼影最好选择（）色彩。A.鲜艳色彩 B.中性色彩 C.夸张色彩 D.黑

在台钻上适宜进行锪孔、铰孔和攻螺纹等加工。

阅读表达

     Sometimes in our lives, we find ourselves in a place where we know no one.Those places are usually

lonely and cold.If you try to make some new friends there, your life will be more enjoyable.Don't worry if

you are a shy person as the steps below will help you do this.

     In every place that you visit, try to introduce yourself to  people.If you are on a bus, try to talk to the

other passengers.If you are in a school, introduce yourself to your classmates, and even if you are in a

bookstore and you happen to meet someone, introduce yourself.The_more_people_you_introduce

_yourself_to, the_more_chances_you_have_of_gaining_new_friends.

     It's good to hear your own name called by others.That's  the greatest sound a person could ever hear.

If you can call out their names when you meet them the second time, this will leave them a deep

impression.If you think you have a problem remembering names, here is a tip.When they have said their

names, use them immediately in a conversation.Say their names at least three times in your conversations.

You will remember their names that way.

     It's important that what you are talking about interest both of you.Talking about them will surely be a

great topic for your conversation.Everyone wants to be the subject of a conversation.

     Making eye contact with them will show that you are serious about them.If your eyes are drifting

throughout your conversation, they'll feel you are not interested in them.So____________with them from

time to time during the conversation.

     These steps are just the basic things that you can do.You can think of many other ways to gain new

friends and remember to have fun while doing it.

1. What's this passage mainly about?(Please answer within 10 words.)

________________________________________________________________________

________________________________________________________________________

2. List three things mentioned in the passage that you can do to gain new friends.(Please answer within 12 words.)

(1)________________________________________________________________________

(2)________________________________________________________________________

(3)________________________________________________________________________

3. Which sentence in the passage is the closest in meaning to the following one?

They will be impressed if you remember their names the next time you meet them.

________________________________________________________________________

________________________________________________________________________

4. Fill in the blank in paragraph 5 with proper words.(Please answer within 5 words.)

________________________________________________________________________

________________________________________________________________________

5. Translate the underlined sentence in Paragraph 2 into Chinese.

________________________________________________________________________

________________________________________________________________________

剂型

已知A，B为三阶矩阵，且有相同的特征值1，2，2，则下列命题：
①A，B等价；
②A，B相似；
③若A，B为实对称矩阵，则A，B合同；
④行列式|A-2E|=|2E-A|中命题成立的有______．

A．1个
B．2个
C．3个
D．4个