27. Toyota announced yesterday that sales of its vehicles made in America has decreased _______ 25 percent since the exposure of its faulty design.
(A) for
(B) upon
(C) with
(D) by

23. If precautions _______, more people might have survived from the storm. (A) had been taken (B) would have been taken (C) are taken (D) have taken

24. Only later _______ how much damage had been caused. (A) Tina did realize (B) did Tina realize (C) Tina realize (D) realized Tina

25. If they had studied, they _______. (A) will pass (B) would have passed (C) would passing (D) would be pass

26. The human brain is _______ of other animals. (A) larger than the brains (B) the largest (C) than the larger brains (D) the brain is larger than that

28. In 1776 Thomas Paine’s popular and influential pamphlet Common Sense _______ the American colonists to declare their independence from English rule. (A) urged (B) to urge (C) to be urged (D) that urged

29. The core of the moon is much smaller, in relation to its size, _______ of the planets. (A) those (B) than those (C) ones (D) than are those

30. Regarded as one of the greatest physicists, _______. (A) the relationship between force and motion was first expressed by Isaac Newton (B) the first to express the relationship between force and motion was Isaac Newton (C) Isaac Newton was the first to express the relationship between force and motion (D) it was Isaac Newton who was the first to express the relationship between force and motion

31. According to the passage, what happens during an ice age？ (A) Rock strata are recognized by geologists. (B) Evidence of foreign materials is not found. (C) Ice covers a large portion of the Earth’s surface. (D) Ice melts six times.

32. The passage covers how many different methods of recognizing past ice ages？ (A) One (B) Two (C) Three (D) Four

33. According to the passage, what in the rock strata is a clue to geologists of a past ice age？ (A) Ice (B) Melting glaciers (C) U-shaped valleys (D) Substances from other areas