39. The meaning of “pseudonym” in the first line is ______.
(A) nom de plume
(B) alliances
(C) coalition
(D) bazaar

35. According to the passage, many young theorists are eager to study the math of superstring theories because _____. (A) their enthusiasm has been aroused by the work of Einstein (B) Witten found that the strings existed in a 10-dimensional universe (C) they are convinced that it is the path to ultimate truth (D) Witten became to be regarded as the most talented physicist when he chose to work in the field

36. What is the main purpose of this paragraph? (A) It criticizes George Orwell’s political viewpoint. (B) It introduces George Orwell rather objectively. (C) It praises George Orwell’s sympathy for the oppressed. (D) It talks about life in India and Burma.

37. Which of the following is not true? (A) Orwell was born in an oriental country. (B) Orwell was educated in the west. (C) Orwell worked as a civil servant in Burma. (D) Orwell worked as a farmer on an animal farm.

38. What is 1984 in the paragraph? (A) The year he decided to write his first novel. (B) The name of a novel he wrote. (C) The name of his farm. (D) The year he expressed his dislike of totalitarianism.

40. How many of Orwell’s novels are mentioned in the paragraph? (A) One. (B) Two. (C) Three. (D) None.

41. What have caused the whooping crane to dwindle in number? (A) Overuse of DDT on agricultural crops. (B) Loss of wetland habitat. (C) Overuse of pesticides. (D) Competition among species.

42. Based on the passage, which of the following species is common to wetlands? (A) Geese. (B) Penguins. (C) Whales. (D) Wolves.

43. Where do ocean food webs begin? (A) Freshwater marshes. (B) Tidal waves. (C) Rocky beaches. (D) Salt marshes.

44. What is the purpose of the passage? (A) To tell why wetlands are salty. (B) To tell where migratory birds reproduce. (C) To specify the value of wetlands. (D) To indicate where fish and shellfish live.

45. Which of the following statements is not true? (A) The best-managed farms produce more green material than salt marshes. (B) Wetlands balance life. (C) Fish and shellfish live in wetlands when young. (D) Salt marshes are the nurseries and farms of the ocean.