11. A conservation group in the United States is trying to change the long-standing image of bats as frightening creatures. The group contends that bats are feared and persecuted solely because they are shy animals that are active only at night.

　　Which of the following， if true， would cast the most serious doubt on the accuracy of the group's contention？

　　（A） Bats are steadily losing natural roosting places such as caves and hollow rees and are thus turning to more developed areas for roosting.

　　（B） Bats are the chief consumers of nocturnal insects and thus can help make their hunting territory more pleasant for humans.

　　（C） Bats are regarded as frightening creatures not only in the United States but also in Europe， Africa， and South America.

　　（D） Raccoons and owls are shy and active only at night； yet they are not generally feared and persecuted.

　　（E） People know more about the behavior of other greatly feared animal species， such as lions， alligators， and snakes， than they do about the behavior of bats.

　　12.The population of peregrine falcons declined rapidly during the 1950's and 1960's and reached an all-time low in the early 1970's. The decline was attributed by scientists to the widespread use of the pesticide DDT in rural areas.

　　Which of the following ， if true， gives the strongest support to the scientists claim？

　　（A） DDT was not generally in use in areas devoted to heavy industry.

　　（B） In the time since the use of DDT was banned in 1972， the population of peregrine falcons has been steadily increasing.

　　（C） Peregrine falcons， like other birds of prey， abandon eggs that have fallen out of the nest， even if the eggs remain intact.

　　（D） Starlings， house sparrows， and blue jay-birds the peregrine falcon prey on-were not adversely affected by DDT in their habitats.

　　（E） Other birds of prey， such as the osprey， the bald eagle， and the brown pelican， are found in the same areas as is the peregrine falcon.