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Directions: Fill in each of the following blanks with ONE word to complete the meaning of the passage.Write your answer on ANSWER SHEET II.

Rachel Carson was a biologist whose words shook the world. She wrote several popular books about the creatures living in and around the sea. But she is best known for one book, Silent Spring. Carson knew how chemical poisons damaged or destroyed organisms 51 addition to the insects or plants they were meant for. She believed that the public should be informed 52 these effects, so that they could 53 wise decisions about the use of pesticides and other dangerous chemicals. Silent Spring, published in 1962, described the effects of chemical poisons on the environment. Almost all the birds in one town were killed by the pesticides meant 54 kill insects that were damaging trees. After another spraying project, cows and sheep became sick, chemicals showed up in the milk farmers sold and pigs stopped 55 birth or produced small and sickly offspring. As pesticides spread through the environment, many wild birds, such as eagles and cranes, stopped laying eggs. Fish were killed in streams and lakes. People were affected by pesticides, 56 . Some people who lived near sprayed areas became ill after the spraying. Food and water supplies were contaminated by the chemicals. Even today, babies are bom with small amounts of chemicals in their bodies.

People who believed that pesticides could be safely used in large amounts tried to prove Carson wrong, 57 could not. Her book created so much attention 58 President John F. Kennedy formed a group to study pesticide spraying. Some pesticides were banned in several countries, Tighter rules were placed 59 the use of others. People began to look for ways to control harmful insects and plants without chemicals. Today many years after Silent Spring was published, people still argue about pesticide use.

In a television interview made before her death in 1965, Rachel Carson said. “ We still talk in terms of conquest. We still haven’t become mature enough to think of ourselves 60 only a tiny part of a vast and incredible universe. Man’s attitude towards nature... is important... because we now have the power to alter and destroy universe. ”

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