Read the following passage and mark the letter A, B, C. or D on your answer sheet to indicate the correct answer to each of the questions.
Throughout the existence and envolvement, the world has undergone various changes. In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot be altered or added to. The information consists of the numbers keyed in.
An electronic pocket calculator can perform almost instant arithmetic. A calculator requires an input unit to feed in numbers, a processing unit to make the calculation, a memory unit, and an output unit to display the result. The calculator is powered by a small battery or by a panel of solar cells. Inside is a microchip that contains the memory and processing units and also controls the input unit, which is the keyboard, and the output unit, which is the display.
The input unit has keys for numbers and operations. Beneath the key is a printed circuit board containing a set of contacts for each key. Pressing a key closes the contacts and sends a signal along a pair of lines in the circuit board to the processing unit, in which the binary code for that key is stored in the memory. The processing unit also sends the code to the display. Each key is connected by a different pair of lines to the processing unit, which repeatedly checks the lines to find out when a pair is linked by a key.
The memory unit stores the arithmetic instructions for the processing unit and holds the temporary results that occur during calculation. Storage cells in the memory unit hold the binary codes for the keys that have been pressed. The number codes, together with the operation code for the plus key, are held in temporary cells until the processing unit requires them.
When the equals key is pressed, it sends a signal to the processing unit. This takes the operation code-, for example, addition-and the two numbers being held in the memory unit and performs the operation on the two numbers. A full adder does the addition, and the result goes to decoder in the calculator’s microchip. This code is then sent to the liquid crystal display unit, which shows the result, or output, of the calculation.
( Source. Adapted from http//:www.grid unep.tech)
What is the main purpose of the passage?
A.To summarize the history of technology
B.To compare computers and calculators with other machine
C.To discuss innovative developments in technology
D.To explain how a calculator works

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Some (A) snakes have holow teeth are called (B) fangs that they use (C) to poison their (D) victims.
A.Some
B.are called
C.use
D.their

I remember............. him somewhere but I can't tell where it was.
A.to see
B.seeing
C.to be seeing
D.to be seen.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
We couldn't afford that house because it ……………..
A.paid through the nose
B.was over my head
C.cost an arm and a leg
D.blew my own trumpet

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Some years ago, my daughter was studying English at a university on the south coast. One evening, she phoned to (46)_______ me that what she really wanted to do was a travel round the world, (47)________ she was looking into the possibility of working in another country. She had seen several advertisements in the paper for students and teachers of English abroad, and she was interested in one in Italy, (48) _________ she was desperate to visit. She decided that this would be a good way to achieve her ambition, so she was writing to apply for the job. The reply (49)_______ a long time to arrive, but eventually she received a letter asking if she would go for an interview in London the following week. She was so excited that she immediately got in touch with the school owner and agree to attend the interview . She was determined that nothing would prevent her (50)_________ doing what she had set out to do.
(Adapted from http//:www.telegraph.co.uk)
(46)

A.talk
B.say
C.tell
D.speak

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I have decided to buy that house. I won’t change my mind ………….what you say.
A.although
B.because
C.whether
D.no matter

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Tom looks so frightened and upset. He ................... something terrible.
A.must have experienced
B.could have experienced
C.might have experienced
D.should have experienced

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Only a few of the many species at risk of extinction actually make it to the lists and obtain legal ………….
A.protection
B.protecting
C.protector
D.protective

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Some years ago, my daughter was studying English at a university on the south coast. One evening, she phoned to (46)_______ me that what she really wanted to do was a travel round the world, (47)________ she was looking into the possibility of working in another country. She had seen several advertisements in the paper for students and teachers of English abroad, and she was interested in one in Italy, (48) _________ she was desperate to visit. She decided that this would be a good way to achieve her ambition, so she was writing to apply for the job. The reply (49)_______ a long time to arrive, but eventually she received a letter asking if she would go for an interview in London the following week. She was so excited that she immediately got in touch with the school owner and agree to attend the interview . She was determined that nothing would prevent her (50)_________ doing what she had set out to do.
(Adapted from http//:www.telegraph.co.uk)
(48)
A.that
B.when
C.where
D.which

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Some years ago, my daughter was studying English at a university on the south coast. One evening, she phoned to (46)_______ me that what she really wanted to do was a travel round the world, (47)________ she was looking into the possibility of working in another country. She had seen several advertisements in the paper for students and teachers of English abroad, and she was interested in one in Italy, (48) _________ she was desperate to visit. She decided that this would be a good way to achieve her ambition, so she was writing to apply for the job. The reply (49)_______ a long time to arrive, but eventually she received a letter asking if she would go for an interview in London the following week. She was so excited that she immediately got in touch with the school owner and agree to attend the interview . She was determined that nothing would prevent her (50)_________ doing what she had set out to do.
(Adapted from http//:www.telegraph.co.uk)
(50)
A.in
B.about
C.from
D.of