51. What is the passage mainly about?
(A) How to execute demolition at the right time. Post Office Cleared Area
(B) How to collapse a building with explosives.
(C) How to use explosives for different purposes.
(D) How to destroy a building with minimum manpower.

47. Which of the following is true about the use of Angry Birds, according to the passage? (A) It has been cited by UK Prime Minister to illustrate political issues. (B) Its characters are used in advertisements mainly for Apple’s products. (C) Its real-life mock-up has appeared in an advertisement for mobile phones. (D) It has been developed into a film about the life of a Brazilian yoga master.

48. What do the blasters need to do in preparing for the demolition of a building, according to the passage? (A) Study the structure of the building. (B) Hire an experienced tour guide. (C) Make a miniature of the building. (D) Consult the original architect.

49. In most cases, where does the explosion start in the building during its destruction? (A) The topmost layer. (B) The upper floors. (C) The lower levels. (D) The basement.

50. According to the following diagram, which part of the target building should the demolition team Park Department Store explode first to safely bring it down? (A) The east side. (B) The west side. (C) The south side. (D) The north side. 

1. Many people think cotton is the most comfortable _____ to wear in hot weather. (A) fabric (B) coverage (C) software (D) wardrobe

2. Because of the engine problem in the new vans, the auto company decided to _____ them from the market. (A) recall (B) clarify (C) transform (D) polish

3. After a day’s tiring work, Peter walked _____ back to his house, hungry and sleepy. (A) splendidly (B) thoroughly (C) wearily (D) vaguely

4. In team sports, how all members work as a group is more important than how they perform _____. (A) frequently (B) typically (C) individually (D) completely

5. Despite her physical disability, the young blind pianist managed to overcome all _____ to win the first prize in the international contest. (A) privacy (B) ambition (C) fortunes (D) obstacles

6. Each of the planets in the solar system circles around the sun in its own _____, and this prevents them from colliding with each other. (A) entry (B) haste (C) orbit (D) range