访问控制的主要作用是防止非法的主体进入受保护的网络资源,允许合法用户访问受保护的网络

题型:判断题

问题:

访问控制的主要作用是防止非法的主体进入受保护的网络资源,允许合法用户访问受保护的网络资源,允许合法的用户对受保护的网络资源进行非授权的访问。

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题型:判断题
如图所示,在△ABC中,∠BAC=130°,若EM和FN分别垂直平分AB和AC,垂足分别为E,F,则∠MAN的度数为(  )
A.50°B.60°C.70°D.80°
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有一带电量是q=-2×10-6C的点电荷,在电场中A点移到B点,电场力做6×10-4J的负功,从B移到C电场力做8×10-4J正功,求AB、BC、CA间电势差各是多少?

题型:判断题

构建模式图,探究地理基本原理、过程、成因及规律,是学习地理的方法之一。读图4回答:a、b、c、d四处气压高低比较正确的是

A.a>b>c>d

B.b>c>d>a

C.d>a>b>c

D.c>d>a>b

题型:判断题

为了尽快得到某种植物的幼苗,在选种时最好选用(  )

A.刚采下的幼嫩种子

B.刚采下的成熟种子

C.已度过休眠期的种子

D.正在进行休眠的种子

题型:判断题

The audience starts to scream and young people all over Britain turn on their TVs. Yes, it’s Top of the pops!

Top of the pops is an amazing 45-year-old programme. Pop stars from all over the world appear on this successful TV prograrmme. After about 2340 shows, it’s still the most popular pop music show in Britain.So what’s the secret?

“We get lots of bands to perform live in the studio,” says producer Chris Cowey. “That just doesn’t happen on other shows”

Chris starts the preparations for the programme over a week before it goes out.His first job is to decide which bands to have on the show. When the chart of the top twenty songs is produced on Sunday, Chris can start to book the bands

Monday starts with Chris meeting his sound, lighting and camera workers. They listen to each song and plan the show.

Tuesday is paperwork day. There are bookings to make sure of, letters to answer and lots of phone calls to make. The show is on Thursday. Bands arrive at the studio from 10 o’clock in the morning and start practicing. Tonight’s presenter, Jo Whiley, practises too

First the bands go to make up. Judy and Issy are the make-up artists. “We see the stars with no make-up on, looking terrible,” says Issy. Then the bands go to the costume department where Marianne dresses the stars.

Back in the studio things are happening. The audience is practising their dance moves! It takes over two hours to record the whole programme, then Chris edits it all night long. The final version is exactly 29 minutes long

小题1:What make (s) Top of the Pops the most popular in Britain?

A.The famous singers of the bands.

B.The live performances in the studio.

C.The large numbers of pop fans in Britain.

D.The jobs carefully done by the workers of the TV station.小题2:When the bands receive the invitations to the performance, ___________________.

A.they must decide what songs they will perform

B.they have no idea what songs they will perform

C.they don’t have to decide what songs they will perform

D.the songs that will be performed haven’t been decided on小题3:Which of the following statements is NOT TRUE according to the passage?

A.The programme time on TV is exactly controlled.

B.All the stars must make up before their performance.

C.The producer plays the main role in planning the programme.

D.There are no audience to join in the performance at the TV station小题4:How is the music programme made at the TV station?

小题5:Which is the proper title for the passage?

A.A Stage for Pop Stars

B.Go Backstage of Top of the Pops

C.Great Success Comes from Hard Work

D.The Most Popular Is the Most Successful

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