THE UNDERLINED WORD NOCTURNAL IN THE PASSAGE MEANS _________ A. SM...

20. The underlined word nocturnal in the passage means _________ a. smart and lively b. passive and lazy c. active at night d. motionlessII. Circle a, b, c, or d as the best choice to complete the text below: Wild animals play an important part in the (21) _____________ of nature and supply us with many important (22) ___________. Birds and other small animals help control insects. Wild animals provide food and (23) _________, too. Furthermore, they (24) ____________ our surroundings more interesting. Uncontrolled hunting has destroyed a lot of wildlife and people have also harmed animals such as the passenger pigeon which disappeared completely. Other including the whooping cranes, the blue whale and the American alligator are in danger of dying out. Sometimes it is necessary to keep animals from (25) _____________ too plentiful. For example, rabbits and such rodents as ground squirrels and mice may cause great damage to crops if they are too (26) __________. Predators help hole down the population of their prey.