Олимпиадные задания. 10 класс.

 I. Insert the right articles in the gaps below. Write “—” when no article is needed.

The Rise of the Internet

In 1) _______ late 20th century, 2) _______ new technology emerged that would alter 3) _______ human history forever: 4) _______ Internet.

What started as 5) _______ military research project in 6) _______ United States quickly transformed into a global network. Today, millions of people access it every day to search for 7) _______ information, play 8) _______ games, or listen to 9) _______ music. It has made 10) _______ profound impact on communication, making it possible to talk to someone on the other side of 11) _______ world in 12) _______ matter of seconds.

II. Insert the right preposition if necessary in the sentences below.

The Galapagos Islands are famous 13) _______ their unique wildlife. Located 14) _______ the Pacific Ocean, about 1,000 kilometers 15) _______ the coast of Ecuador, these islands consist 16) _______ volcanic rocks. Charles Darwin visited them 17) _______ 1835, and his observations of the local species contributed 18) _______ his theory of evolution. Many animals found here, such as the marine iguana, are unique 19) _______ these islands. Visitors must strictly comply 20) _______ the environmental regulations to avoid causing damage 21) _______ the fragile ecosystem, which has been 22) _______ threat for decades.

Keys:

 I (Articles): 1) the, 2) a, 3) —, 4) the, 5) a, 6) the, 7) —, 8) —, 9) —, 10) a, 11) the, 12) a

II (Prepositions): 13) for, 14) in, 15) off / from, 16) of, 17) in, 18) to, 19) to, 20) with, 21) to, 22) under