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 following questions.

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 which are 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. After the addition is done, the result goes to the 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.

What is the main purpose of the passage?

People should _______ green lifestyle to help conserve the natural resources.

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

Right after the boy got out of his house, it started to rain heavily.

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

The children were attracted by the show. It was performed by the animals.

Would you mind _______ these plates a wipe before putting them in the cupboard?

We are all too _______ of traditions in our modern world, but they can have a very strong impact on us.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Educators are complaining that students rely on social media so much that they lose the ability to think critically.

Digital clocks, however precise, they cannot be perfectly accurate because the earth’s rotation changes slightly over years.

Sometimes people just focus on the _______ benefits without thinking of the environmental risks of certain economic activities.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks.

Seeking a new life and hoping a significant (28) ___________ in their standard of living, foreign workers began flocking into Western Europe during the 1950s. In Britain, some of the first immigrants arriving from the West Indies and the Indian subcontinent were welcomed by brass bands, but the dream of a new life soon (29) _______ sour for many.

Attracted by the promise to earn good money and learn new skills, the reality they found was often one of low wages and, in many case, unemployment. Some did not adapt (30) _______ to life in a country of cold weather and discrimination. The (31) ________ of West Indian immigrants moved into the inner cities, areas that were already fraught with social tensions caused by poverty and poor housing. There were cases of open hostility towards the newcomers; riots (32) ________ out in Notting Hill, West London in 1958, when gangs of white youths began taunting immigrants.

Yet despite the numerous difficulties they encountered, many foreign workers did manage to adjust to their new conditions, settling in their new adopted country and prospering. Their contribution had the effect of not only speeding up the pace of economic change in the postwar period, but also transforming Western Europe into a multiracial society.

Điền vào ô 28

“Don’t _______ to phone Mrs. Whiteman. I’ve already talked to her about the upcoming meeting held by the board of directors.”, said Mary.

He is _______ he has bought a lot of house in this area.

_______, the meeting stops now. Please feel free to contact me if you have any further questions later.

__________, cars are widely used as the most popular mode of transport in the United States.

Because there were so few women in the early Western states, the freedom and rights of Western women were more extensive than Eastern ladies.

If he _______ ill yesterday, he would have taken part in the football match.