问题 选择题

能证明“CaCO3并非绝对不溶于水”的实验事实是[ ]

A.向少许CaCO3粉末加入NaOH溶液充分振荡.无明显现象  

B.向少许CaCO3粉末加入过量稀盐酸充分振荡,粉末消失且有气泡产生  

C.向2颗蚕豆粒般石灰石固体加入3mL.蒸馏水,滴入酚酞试液片刻内不变红  

D.向少许CaCO3粉末加入3mL.蒸馏水充分振荡.滴入酚酞试液即变红

答案

答案:D

阅读理解

Even if you are naturally shy, these three tricks will help you to quickly build a new social circle in any new city.

1. Take pictures

One of the great things about taking pictures at an event or a party is that it gives you an excuse to get in touch with the person later. Everybody loves seeing pictures of themselves, and it’s very easy after taking a picture to say “If you’d like I can email it to you”. This can be the seed that leads to new connections.

2. Eat alone in public

You might feel self-conscious eating by yourself but it has an important benefit: you are much easier to approach(接近) when you are alone. People may be afraid of disturbing you or being rude if you talk with someone else. Bring a book or newspaper to read. Plus, having an interesting book with you will give others an excuse tostart a conversation if they’ve read it.

3. Join a class, sports team, or club

Yoga, salsa dancing, volleyball, Toastmasters (a public speaking club), a class for work, etc. Choose a new hobby or continue an old one!

These are all great places to meet new people, primarily because you will be made to see the same people over and over again in the class. You will automatically make friends with them if you have a common interest and are made to see each other again.

小题1:How many tricks are mentioned in the passage?

A.Three.

B.Four.

C.Five.

D.Six.小题2:________ will give you an excuse to make friends with the person.

A.Taking photos

B.Eating alone in public

C.Joining a class

D.Reading an interesting book小题3:The writer wants to tell you ______________.

A.how to make as many friends as you can

B.how to make friends in a new city quickly

C.how to build a social circle

D.how to start a conversation with others

单项选择题 共用题干题