ey.РD. The US government took notice of her researches.Р( )3. Why is the book Silent Spring important to America's environmental protection?РA. It describes a silent spring.РB. It topped the book sales lists.РC. It changed how America thought about nature.РD. It includes all Carson's research achievements.Р( )4. What does the underlined word “It” in Paragraph 3 mean?РA. The book Silent Spring.РB. The way America thought.РC. The US Bureau of Fisheries.РD. America's Environmental Protection Agency.Р( )5. Why was Rachel Carson awarded the Presidential Medal of Freedom?РA. She published the book Silent Spring.РB. She did a lot of researches for the US Bureau of Fisheries.РC. She donated much money to the Rachel Carson Book Prize.РD. She made great contributions to the environmental protection.
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