37. The word "they" in line 20 refers to
(A) tulips
(B) plains
(C) immigrants
(D) plants

33. The word "flourished" in line 11 is closest in meaning to (A) were discovered (B) were marketed (C) combined (D) thrived

34. The author mentions tulip growing in New Netherland. Pennsylvania. and Michigan in order to illustrate how (A) imported tulips were considered more valuable than locally grown tulips (B) tulips were commonly passed as gifts from one family to another (C) tulips grew progressively more popular in North America (D) attitudes toward tulips varied from one location to another

35. The word "grumbled" in line 16 is closest in meaning to (A) denied (B) warned (C) complained (D) explained

36. The passage mentions that one reason English and Dutch settlers planted tulips in their gardens was that tulips (A) were easy to grow (B) had become readily available (C) made them appear fashionable (D) reminded them of home

38. According to the passage, which of the following changes occurred in English gardens during the European settlement of North America? (A) They grew in size in order to provide enough plants to export to the New World. (B) They contained a wider variety of tulips than ever before. (C) They contained many new types of North American plants. (D) They decreased in size on the estates of wealthy people.

39. The passage mentions which of the following as a problem associated with the importation of tulips into North America? (A) They were no longer fashionable by the time they arrived. (B) They often failed to survive the journey. (C) Orders often took six months or longer to fill. (D) Settlers knew little about how to cultivate them.

40. What does the passage mainly discuss? (A) How insects use pheromones to communicate (B) How pheromones are produced by insects (C) Why analyzing insect pheromones is difficult (D) The different uses of pheromones among various insect species

41. The word "serve" in line I is closest in meaning to (A) improve (B) function (C) begin (D) rely

42. The purpose of the second mention of "hormones" in line 4 is to point out (A) chemical signals that are common among insects (B) specific responses of various species to chemical signals (C) similarities between two chemical substances (D) how insects produce different chemical substances

43. The word "sole" in line 6 is closest in meaning to (A) obvious (B) best (C) only (D) final