Переписати, знявши риску Котрий/сь, аби/хто, аби/до/чого, де/чий, де/з/котрим, який/небудь, казна/з/чим, будь/що, ні/який, ні/з/ким, будь/у/кого.

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Scientific and technological progress

It's difficult to overestimate the role of science and technology in our life. They accelerate the development of civilization and help us in our co-operation with nature. Scientists investigate the laws of the universe, discover the secrets of nature, and apply their knowledge in practice improving the life of people. Let's compare our life nowadays with the life of people at the beginning of the 20th century. It has changed beyond recognition. Our ancestors hadn't the slightest idea of the trivial things created by the scientific progress that we use in our everyday life. I mean refrigerators, TV sets, computers, microwave ovens, radio telephones, what not. They would seem miracles to them that made our life easy, comfortable and pleasant. On the other hand, the great inventions of the beginning of the 20th century, I mean radio, airplanes, combustion and jet engines have become usual things and we can't imagine our life without them. A century is a long period for scientific and technological progress, as it's rather rapid. Millions of investigations the endless number of outstanding discoveries have been made. Our century has had several names that were connected with a certain era in science and technology. At first it was called the atomic age due to the discovery of the splitting of the atom. Then it became the age of the conquest of space when for the first time in the history of mankind a man overcame the gravity and entered the Universe. And now we live in the information era when the computer network embraces the globe and connects not only the countries and space stations but a lot of people all over the world. All these things prove the power and the greatest progressive role of science in our life. But every medal has its reverse. And the rapid scientific progress has aroused a number of problems that are a matter of our great concern

Називний ві́сім мільйо́нів дев’ятсо́т со́рок п’ять ти́сяч чоти́риста вісімдеся́т сім

Родовий         восьми́ (вісьмо́х) мільйо́нів дев’ятисо́т сорока́ п’яти́ (п’ятьо́х) ти́сяч чотирьохсо́т вісімдесяти́ (вісімдесятьо́х) семи́ (сімо́х)

Давальний восьми́ (вісьмо́м) мільйо́нам дев’ятиста́м сорока́ п’яти́ (п’ятьо́м) ти́сячам чотирьомста́м вісімдесяти́ (вісімдесятьо́м) семи́ (сімо́м)

Знахідний ві́сім мільйо́нів дев’ятсо́т со́рок п’ять ти́сяч чоти́риста вісімдеся́т (вісімдесятьо́х) сім (сімо́х)

Орудний вісьма́ (вісьмома́) мільйо́нами дев’ятьмаста́ми (дев’ятьомаста́ми) сорока́ п’ятьма́ (п’ятьома́) ти́сячами чотирмаста́ми вісімдесятьма́ (вісімдесятьома́) сімома́ (сьома́)

Місцевий у восьми́ (вісьмо́х) мільйо́нах дев’ятиста́х сорока́ п’яти́ (п’ятьо́х) ти́сячах чотирьохста́х вісімдесяти́ (вісімдесятьо́х) семи́ (сімо́х)