31. (A) They’ve lost their suitcases. (B) They can’t find their dormitory. (C) Their dorm rooms have been given to other students. (D) They’ve missed the bus to their dormitory.

32. (A) It has no bus service (B) It is small (C) It is located outside of town. (D) It is very hilly.

33. (A) It’s far from the academic buildings. (B) No buses go to it. (C) There are few first-year students living there. (D) It’s older than the other dormitories.

34. (A) They bring too many things with them. (B) They waste their time. (C) They don’t familiarize themselves with the campus (D) They don’t make realistic career plans.

35 (A) Judging people’s behavior. (B) Common causes of anger. (C) Changing people’s attitudes. (D) The effects of negative behavior.

36. (A) When they’re unable to control the person’s behavior. (B) When the causes of the behavior are obvious. (C) When the consequences of the behavior are unpleasant. (D) When the behavior is expected.

37. (A) It’s not always clear why people behave in certain ways. (B) People usually blame others for their mistakes. (C) Certain conditions cause drivers to behave strangely. (D) The reason for some behavior is obvious.

38. (A) They usually accept responsibility. (B) They blame factors beyond their control (C) They complain about their personal problems. (D) They compare their behavior to the behavior of others.

39. (A) Settlement patterns in desert. (B) Causes of desertification. (C) Plant adaptation to desert conditions. (D) Regions most affected by desertification.

4O. (A) It receives more nutrients than it can absorb. (B) It becomes oversaturated with water. (C) It loses the ability to support insect life. (D) It loses nutrients that aren’t replaced.

 41. (A) Too many animals eating the plants in one small area. (B) Planting too much vegetation in one small area. (C) Too many people building houses in one small area. (D) Bringing together the wrong kinds of animals and plants.

42. (A) The animals overfertilize the soil. (B) Dead plant roots can’t hold the soil together. (C) The wrong types of plants are left standing. (D) There is a buildup of plant and animal matter.

43. (A) It can cause flooding in an (B) It can carry diseases that affect animals. (C) It can introduce too much salt into the soil. (D) It can divert water from important crops.

44. (A) A possible explanation for why green turtles nest in certain locations. (B) Physical differences among various groups of green turtles. (C) Several examples of mating behavior in green turtles. (D) The impact of continental drift on the diet of green turtles.

45. (A) Teach their young how to swim. (B) Mate and lay eggs. (C) Hide from predators. (D) Eat different kinds of fish.