Read the sentences. Choose the letter A, B, C or D to fill in the gap. (20 points)
0. When you receive an MMS message on your phone, the message icon is displayed with a tone, illumination and/or vibration.
a) along b) on c) for d) in
1. In the US, there is a lot of competition in the telecommunication field now so telephone service prices in the past twenty years.
a) had come down b) have come down c) came down d) come down
2. More and more companies hard to get and keep customers.
a) try b) tried c) have tried d) are trying
3. While we experiments, the signal with oscilloscope.
a) was doing/ was being measured b) were doing/ was measured
c) were doing/was being measured d) were doing/ measured
4. He asked how many files .
a) had been downloaded b) have been downloaded
c) were downloading d) are downloaded
5.You can receive, display, edit and/or send text messages on any network that a roaming agreement.
a) is having b) had c) have d) has
6. that she could trust them she didnt know what to do. a) Not having known b) Knowing not c) Not knowing d) Knowing
7. In many developing countries, WI-MAX a huge impact.
a) has already made b) have already made
c) had already made d) has already been made
8. The Asia Pacific region over 500 mln. 3G subscribers by the beginning of the next year.
a) will reached b) reach c) will have reached d) reaches
9. Unless you have a license, you to work in telecom industry.
a) are not allowed b) cannot allow c) be not allowed d) will allow
10. so little in the country, I am afraid I cannot answer all your questions. a) Seeing b) Having seen c) To see d) See
11. Judging from the books and papers on his desk he must since they left him in the morning.
a) have been working b) work c) have worked d) be working
12. They are said the program since they presented the project.
a) to be developing b) to have been developing
c) to have developed d) have been developing
13. It annoys me that you never do your assignments! I wish you systematically.
a) get ready b) got ready c) would get ready d) had got ready
14. She smiled the joke.
a) remembered b) to remember c) remembering d) to be remembered
15. Joan likes arithmetical operations. She is pleased this kind of work all the time.
a) to have been doing b) to be doing c) to have done d) to do
16. We the scheme for several hours.
a) are assembling b) have been assembling c) have assembled d) have assembling
17. If we add a charge to our system that is greater than 0, then the test point charge affect the system and change it.
a) would have b) wouldnt have been c) will d) wouldnt be
18. I felt very tired the whole day at the computer. a) being worked b) having worked c) work d) works
19. She failed most of her exams, and now she wishes she harder.
a) works b) worked c) would work d) had worked
20. I am sorry I have forgotten you my textbook. Can I have it back?
a) lending b) lend c) to lend d) lended
Choose one of the following: mobile phone, CCTV camera, laptop, wireless LAN. Write a composition, in which describe the following (10 points):
- The working principle;
- The meaning to the society;
- The advantages and disadvantages;
- Your personal attitude.
In CCTV system video signals are sent directly by encoding and supplies 110 volt power. Another thing about CCTV system is that you will find a companion decoder. One of the important things is the durability. Another feature about the security system is that it has the ability to capture the pictures in the different angles. CCTV security system is highly sensitive, and would be able to deliver the quality images even in the dark room or at night.
CCTV camera system is being widely employed as a security system for surveillance in offices as well as homes. Not only in closed or private places; CCTV camera system extends as a security system in public and crowded places like traffic intersections, malls, shops, etc.
As with the case of any technology or security system device, a CCTV camera system has its own pros and cons. Advantages of CCTV Camera System: 1. Deters Crime: The presence of CCTV camera system for surveillance will reduce petty thefts and vandalism in shops, malls and other public places. 2. Helps Maintain Records; 3. Protects Employees. Disadvantages of CCTV Camera System: 1. CCTV camera system cannot monitor every area of your office or home at all times. 2. Privacy Concerns: Constant monitoring of every activity might put the workers ill at ease. 3. The initial costs incurred per camera are high.
I would like to have a good CCTV camera for my home security. Having an extra security gives a peace of mind, and you will feel cool as cucumber.