47. What does the passage mainly discuss?
(A) An international exhibit of space technology
(B) The use of satellites for predicting weather
(C) Management of the Earth’s resources
(D) Plans for a satellite research program

43. What does the passage mainly discuss? (A) The reason infants smile or cry (B) The importance of outside stimuli to infants (C) The development of emotional expression in infants (D) The effects of fears on an infant’s development

44. “firing” in line 5 refers to (A) excitement (B) ignition (C) activation (D) provocation

45. What can be inferred from the passage about the cry of fear? (A) It is not as easy to identify as the cry of pain. (B) It usually develops later than the cry of pain. (C) It is the first emotion expressed by an infant. (D) It is louder than the cry of pain.

46. In the passage, the author organizes the discussions of infants’ emotional expressions according to the (A) intensity of expression used (B) importance of the emotions (C) caretaker’s reaction to the expression (D) order in which the emotions develop

48. Which of the following conclusions can be drawn from the author’s use of the phrase “at last” in line 3? (A) The Earth satellites will last forever. (B) The atmosphere will be studied after the seas and living creatures are studied. (C) Satellites have long sought to understand the relationship of the atmosphere, the sea, and life-forms. (D) Earth satellites play the least important role in our understanding of a single global system.

49. The “probes” mentioned in line 7 are (A) Hypotheses (B) Digging tools (C) Research teams (D) A type of satellite

50. Where in the passage does the author mention the rotation of the Earth? (A) Line 1-4 (B) Line 5-6 (C) Line 8-10 (D) Line 11-13

41. 有四個好朋友，已知四人的年齡成等差數列、公差是 1，且四個人的年齡乘 積是 3024，則此四人中年齡最大者是幾歲？ (A) 7 歲 (B) 9 歲 (C) 11 歲 (D) 13 歲

42. 文文閱讀一本書，第一天看的頁數是該書全部的，第二天看的頁數是第一 天看的頁數的 。已知第一天比第二天少看 10 頁，則文文還有多少頁沒有 看﹖ (A) 160 頁 (B) 110 頁 (C) 80 頁 (D) 50 頁

43. 設 2 x=8y+1 且 9 y=3x-9，則 x + y =？ (A) 21 (B) 24 (C) 27 (D) 28