Title TEST 2- UNIT 5 - HS.docx ✅

e. Although the internet began as a simple network for scientists, it has grown into a vast system where people can share ideas and create new technologies together. A. b-c-d-e-a B. e-b-d-c-a C. c-b-e-d-a D. d-c-b-e-a Question 17: a. Radar was invented to spot enemy planes, but now it helps military leaders see dangers from far away. b. Tanks first appeared in World War I, and soldiers feared these metal machines that could cross trenches while bullets bounced off them. c. Gunpowder from ancient China changed battles forever, and it quickly led to powerful weapons that made armor useless. d. Computers created cyber warfare, where countries can attack without sending any soldiers across borders. e. Aircraft started as scouts but became bombers that could attack cities where ground soldiers couldn't defend. A. c-b-e-a-d B. c-d-a-b-e C. c-e-b-d-a D. c-a-e-b-d Read the following passage about Inventions That Were Centuries Ahead of Their Time and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22. From the shadows of antiquity emerge technological prophecies - creations so ahead of their time they defied the very limits of their era's imagination. Leonardo da Vinci designed flying machines and tanks in the 15th century, but these ideas (18)_________. The ancient Greeks created the Antikythera mechanism, which was a complex astronomical calculator that could predict eclipses and planetary positions with amazing accuracy. If the Baghdad Battery had been fully understood when it was created 2,000 years ago, electricity might have been harnessed much earlier in human history. Hero of Alexandria invented a steam- powered device in the first century, (19)_________; the world simply wasn't ready for such technology at that time. What fascinates historians, as many scholars agree, (20)_________. Charles Babbage designed the Analytical Engine in the 1830s, and it contained all the essential elements of a modern computer; (21)_________. These visionary creations demonstrate how human ingenuity often surpasses the technological capabilities of the era. Many of these inventions were rediscovered and finally appreciated centuries after their creators had passed away, showing that brilliant ideas may sometimes need to wait for the right moment in history to flourish. Modern researchers, (22)_________, aim to better understand the development of human knowledge across time and to appreciate the remarkable foresight of these pioneering minds. These historical examples remind us that innovation isn't always immediately recognized, and some of today's overlooked ideas might become tomorrow's revolutionary technologies, continuing the cycle of human creativity and discovery. Question 18: A. which remained theoretical concepts despite extensive research by ancient scholars B. couldn't be built until materials and engines were developed centuries later