5. The author mentions airplanes in line 8 in order to

　　(A) illustrate the size of wingspans in some pterosaurs

　　(B) compare the energy needs of dinosaurs with those of modern machines

　　(C) demonstrate the differences between mechanized flight and animal flight

　　(D) establish the practical applications of the study of fossils

　　6. The word "They" in line 10 refers to

　　(A) powerful muscles

　　(B) bodies

　　(C) jaws

　　(D) flying reptiles

　　7. According to the passage , pterosaurs were probably "not skillful fliers" (lines 10-11) because

　　(A) of their limited wingspan

　　(B) of their disproportionately large bodies

　　(C) they lacked muscles needed for extended flight

　　(D) climate conditions of the time provided insufficient wind power

　　8. In paragraph 2, the author discusses the development of flight in birds as resulting from

　　(A) a similarity in body structure to pterosaurs

　　(B) an evolution from pterosaurs

　　(C) the dominance of birds and pterosaurs over land animals

　　(D) a separate but parallel development process to that of pterosaurs

　　9. The word "classified" in line 21 is closest in meaning to

　　(A) perfected

　　(B) replaced

　　(C) categorized

　　(D) protected

　　10. Which of the following helped researchers determine that Archaeopteryx was not a dinosaur?

　　(A) Its tail

　　(B) Its teeth

　　(C) The shape of its skull

　　(D) Details of its bone structure

　　11. What is the significance of the discovery that was made in southern Germany?

　　(A) It is thought to demonstrate that birds evolved from dinosaurs.

　　(B) It is proof that the climate and soils of Europe have changed over time.

　　(C) It suggests that dinosaurs were dominant in areas rich in limestone.

　　(D) It supports the theory that Archaeopteryx was a powerful dinosaur.

　　參考答案：DBBCA DCDCDA