The Global Positioning System (GPS)

Hello guys .... how is it going ? this week we are going to discuss about our Midterm test, The Global Positioning System (GPS) exactly .... 

Part A .

1.The Global Positioning System, or GPS, can show you your exact position on Earth any time, anywhere, in any weather. The system consists of a constellation of 24 satellites (with about 6 "spares") that orbit 11,000 nautical miles above Earth’s surface and continuously send signals to ground stations that monitor and control GPS operations.

2. It is maintained by the United States government and is freely accessible by anyone with a GPS receiver.

3 . - Space segment

     - Control segment

     - User segment

4.GPS satellites broadcast signals from space, which each GPS receiver use to calculate it's three-dimensional location (latitude, longitude, and altitute) plus the current time. 

5.The space segment consists of a constellation of 24 satellites (and about six "spares"), each in its own orbit 11,000 nautical miles above Earth.

The user segment consists of receivers, which you can hold in your hand or mount in a vehicle, like your car. The control segment consists of ground stations (six of them, located around the world) that make sure the satellites are working properly.

6.Meaning it has significant military and civilian applications .

7.Commerce: GPS's accurate time facilitates everyday activities such as banking, mobile phone operations, and even the control of power grids by allowing well synchronized hand-off switching.

Science :  farmers, surveyors, and geologists.  

8. we had to know about what GPS use for and what we need about it and then use it just for kindness. 

PART B

global = worldwide

reliable = dependable

unobstructed = keep up

accessible = reachable

receiver = handset

maintain = clear

broadcast = transmit

require = need

alternate = substitute

host = mass

PAST C 

1.My money has been stolen

2.I'm being catch up by the stress if the last few weeks

3.The task will be broken down into smaller, manageable mini tasks.

4.They deserve to be congratulated for their good work.

5.If I had heard the tsunami alarm, I would not have gotten injured

6.My parents have provided me with enough money to last for one month

7.He would have bought a Ferreri if he had won the lettery

8.I will get you a newspaper if I go downtown

9.The geologist analyzed the cause of the eruption. 

10.If she had known she couldn't eat octopus, she wouldn't have bought it

11.I'm bored of the same old routine day after day.

12.More and more farmland is being eaten up by the cities

13.if u are confused with the english grammar, consult the grammar book

14.Do you believe in magic

15.It often takes a long tine to recover from a serious illness.

PART D

1.HAve you ever heard of something like that ? (b)

2.Trucks are prohibited for using resudential streets. (b)

3.If he read the tabel, he wouldn't wash it in hot water. (b)

4.Everybody was suprised by the news. (b)

5.She was delighted with the present you gave her. (a)

6.When Paul left home, his attitude toward his parents seemed to change. (a)

7.If the prison warder didn't accept the money, the prisoner wouldn't go to Bali (b)

8.The essays hand in on Monday . (a)

9.The road outside my house was being dug up (a)

 10. Network security is going to be taught (b)

11.If he went to the doctor, the cut on his hand wouldn't get infected (C)

12.We spent three hours wrestling with that problem, but we could not solve it. (a)
13.If you eat greasy food , you will become fat. (c)

14.If she had failed, she wouldn't have gone to university (c)

15.If he is handsome, he would have beautiful girlfriend (a)

16.JOgging is done by many people foe exercise. (a)

17.The professor hand out the syllabus (a)

18.MAny creative computer programs are being presented at this competition (a)

19.If i have enough money ,  i will read a lot of books (a)

20.The company has rejected the worker's demands for a rise in pay (a)