27.
(A) wished
(B) intended
(C) collaborated
(D)showed

23. (A) miscalculation (B) misunderstood (C) misinterpretation (D)misbehavior

24. (A) operation (B) assumption (C) mechanism (D)reaction

25. (A) talkative (B) reactive (C) loud (D)silent

26. (A) concrete (B) upset (C) annoyed (D)angry

28. (A) presence (B) forgetfulness (C) deletion (D)omission

29. (A) requirement (B) request (C) obligation (D)obedience

30. (A) interest (B) alertness (C) dilemma (D)involvement

31. The expression "to their graves” in paragraph 1 could best be replaced by (A) to shipyards (B) to the seafloor (C) to be repaired (D)to their destination

32. According to the passage, sailors 4000 years ago(A) were able to calculate their speed(B) were dependent on starts to tell time. (C) never ventured away from the coastline. (D)used the compass to navigate.

33. Which of the following sentences below expresses the essential information in the underlined sentence in paragraph 4? (A) A chronometer could be used to determine when the Sun was going to rise. (B) A chronometer could only be used to calculate longitude if one was traveling in a westerly direction. (C) A chronometer was an inaccurate measure of time because of the movement of the ship. (D)A chronometer could be used to measure longitude by combining knowledge about the rising Sun and accurate measurement of time.