一个比例的两个外项互为倒数,其中一个内项是29,另一个内项是______.

题型:填空题

问题:

一个比例的两个外项互为倒数,其中一个内项是
2
9
,另一个内项是______.
考点:比例的意义,比例的基本性质
题型:填空题

According to a new survey, students’ safety has become a big problem. Nearly 50% of students say they are worried about robbery (抢劫) on the way to and from school. Now in main big cities in China, some schools have taught students an unusual lesson: self-protection. Students like this lesson because there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens.

Chen Haoyu, a teacher at Beijing No.25 Middle School, gives young students advice on how to deal with danger.

If you are robbed

Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police later.

If you are in a traffic accident

f a car hits you, you should remember the car number. If it is a bicycle, try to call your parents before you let the rider go. This is because you don’t know how seriously you are hurt.

If it is raining hard and there is lightning

Don’t stay in high places and stay away from trees.

When there is a fire

Get away as fast as you can. Put wet things on your body and try to find an exit. Do not use the lift.

If someone is drowning(溺水)

If you can’t swim, don’t get into the water. Cry out for help.

Remember that danger is never as far away as you think. Take care of yourself at all times!

小题1:Why do students like the self-protection lesson?

①Because there are no tests.

②Because the lesson is boring.

③Because they can learn how to save lives.

④Because they can learn to know how to stop danger before it happens.

A.①②

B.②③

C.①②④

D.①③④小题2:What will you do if a bicycle hurts you?

A.I will remember the bicycle number.

B.I won’t let the rider go until I call my parents.

C.I will let the rider go before I call my parents.

D.I will let the rider go because I know how seriously I am hurt.小题3:If your house is on fire, you must ________________.

A.put dry things on your body

B.run quickly and take the lift

C.run away and find an exit as quickly as you can

D.take everything you have and then run away小题4:There are ___________ ways of self-protection mentioned in the passage.

A.3

B. 7

C. 5

D.6小题5:The best title for this passage is ____________________.

A.How to keep calm

B.Self-protection

C.An usual lesson

D.Danger

题型:填空题

下列各句中的加粗成语,使用正确的一项为 [ ]

A.让人想不到的是,他下车伊始就拿出了一部具有决定意义的作品,使自己跻身于大师的行列。

B.来此旅游的人们,面对着太湖的水色山光,又焉能不为大自然巧夺天工的造化所惊叹的呢!

C.他看到朋友工作十分沉重,生活又那么艰苦,面庞消瘦,明显营养不足,就动了恻隐之心,跑到街上给朋友买了些补品。

D.毛 * * 的《沁园春·雪》发表后,蒋介石以国民党总裁的身份向属下征求与之相颉颃的和作,终因无法平分秋色而作罢。

题型:填空题

电缆移动越快,磁性记号幅度越大。

题型:填空题

与产权比率相比,资产负债率侧重于分析 ( )。

A.财务结构的稳健程度

B.债务偿付安全性的物质保障程度

C.自有资金对偿债风险的承受能力

D.所有者权益对投资 * * 益的保障程度

题型:填空题

已知AB边的坐标方位角αA,B=45°16′00″,则BA的坐标方位角αB,A为()

A.45°16′00″

B.135°16′00″

C.225°16′00″

D.134°44′00″

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