40. Which of the following is true of blue fin tunas?
(A) Their eyes and brain are more efficient than those of any other fish.
(B) Their body temperature can change greatly depending on the water temperature.
(C) They can swim in wasters that are much colder than their own bodies.
(D)They have special muscle tissue that warms their eyes and brain.

36. Which of the following is one of the reasons that tunas are in constant motion? (A) They lack a swim bladder. (B) They need to suck in more water than other fishes do. (C) They have large muscles for breathing. (D) They cannot open their mouths unless they are in motion.

37. Which of the sentences below best expresses the essential information in this highlighted sentence? “One potential problem is that opening the mouth to breathe detracts from the streamlining of these fishes and tends to slow them down.” (A) These fishes often have a problem opening their mouths while swimming. (B) The streamlining of these fishes prevents them from slowing down. (C) The streamlining of these fishes tends to slow down their breathing. (D) Opening the mouth to breathe can reduce the speed of these fishes.

38. The word “channel” is closest in meaning to ____. (A) reduce (B) remove (C) direct (D) provide

39. One of the adaptations of fast-swimming fishes that might be used to improve the performance of ships is these fishes’ ability to ___. (A) swim directly through eddies (B) make efficient use of water currents (C) cover great distances without stopping (D) gain speed by forcing water past their gills

41. (A) arose (B) aroused (C) rose (D) roused

42. (A) was overridden (B) overriding (C) was overriding (D) overrode

43. (A) demanded (B) was demanded (C) demanding (D) which was demanded

44. (A) relieve (B) reload (C) relay (D) relish

45. (A) where (B) when (C) by which (D) which

46. (A) done (B) made (C) offered (D) invented