能够发送主叫号码的TUP消息为（）A.SAM B.GRQ C.IAM D.IAI

How do you remember the way to your house? Where do dreams come from?

It is your brain (大脑) that does these things. A British scientist showed that sleep can improve one’s memory. It’s not a dream for students to study when they sleep. In fact, your brain is working day and night. If you learn words before bed, a certain part of your brain may help you to remember the words while you sleep. What’s more, another scientist in the USA found that there was a “talent button(按钮)” in the human brain. It might make a person more talented(有才能的).

There are more interesting things about the brain. Your brain uses less energy than a fridge light. Just two bananas can give the brain enough energy to work for a whole day. According to some scientists, yawning（打哈欠）keeps your brain “cool”, which makes us think quicker.

Here are some pieces of advice to keep a good brain:

● Eat healthy food.

● Get a lot of playtime or exercise.

● Don’t drink or smoke.

● Use your brain a lot.

小题1:A British scientist found out that               .

A．drinking could affect our memories.

B．dreams could affect our memories.

C．sleep could improve our memories.

D．bananas could improve our memories.小题2:According to the passage, if we want to have a good brain, we should  .

A．use our brains more

B．sleep fewer hours

C．work longer hours

D．remember fewer things小题3:Which of the following is TRUE according to the passage?

A．Our brains only work in the daytime.

B．Our brains need much energy every day.

C．Smoking can keep our brains healthy.

D．Getting exercise is good for our brains.

求过定点P（0，1）且与抛物线y²=2x只有一个公共点的直线方程

下列哪一项不是光化学烟雾的成分（）

A.PAN_S

B.O₃

C.醛类

D.H₂SO₄

E.HNO₃

上颌后部口腔前庭与口腔本部的交界处为（）

A.腭小凹

B.后堤区

C.翼上颌切迹

D.上颌结节

E.颤动线

怎样清除油井的盐类结垢？