38. Which of the following statements is true?
(A) Truffles are roots of some old trees.
(B) Truffles can be found only by dogs and pigs.
(C) Truffles send out a strong odor when they mature.
(D) Truffles cannot be collected at the same place repeatedly.

複選題34.(AB) Hitler, for example, is claimed to have been a victim of bullying in his childhood. (AC) Campus bullying is becoming a serious problem in some high schools in big cities. (AD) The friends and classmates of the bully and the victim may accept the violence as normal. (AE) Research indicates that bullying may form a chain reaction and the victim often becomes the bully. (BC) Psychologists have been puzzled by the inactivity of crowds and bystanders in urban centers when crimes occur in crowded places. (BD) The link between bullying and school violence has attracted increasing attention since the 1999 tragedy at a Colorado high school.

複選題35. (AB) Hitler, for example, is claimed to have been a victim of bullying in his childhood. (AC) Campus bullying is becoming a serious problem in some high schools in big cities. (AD) The friends and classmates of the bully and the victim may accept the violence as normal. (AE) Research indicates that bullying may form a chain reaction and the victim often becomes the bully. (BC) Psychologists have been puzzled by the inactivity of crowds and bystanders in urban centers when crimes occur in crowded places. (BD) The link between bullying and school violence has attracted increasing attention since the 1999 tragedy at a Colorado high school.

36. Why do some people prefer using dogs than pigs in search of truffles? (A) Dogs have stronger paws to dig. (B) Dogs usually won’t eat the truffles found. (C) Dogs have a better sense of smell than pigs. (D) Dogs are less likely to get excited than pigs.

37. What is the best way to enjoy truffles as a delicacy? (A) Eating them cooked with pork. (B) Eating them uncooked with bland oil. (C) Eating them fresh right after being collected. (D) Eating them after being refrigerated.

39. Which of the following can be inferred from the passage? (A) Truffles sold in glass jars are tasteless. (B) Truffles taste like fruit when eaten fresh. (C) Truffles are only used for cooking nowadays. (D) Truffles are expensive because they are difficult to find.

40. What is the main idea of this passage? (A) The success of animal experiments should be ensured. (B) Ban on the use of animals in the lab should be enforced. (C) Greater efforts need to be taken to reduce the number of lab animals. (D) Scientists should be required to share their research results with each other.

41. Which of the following statements is true about animals used in the lab? (A) America uses only about 1.1 million lab animals per year. (B) Europe does not use mice and rats as lab animals at all. (C) Britain does not use as many lab animals as China does. (D) Japan has limited data on the number of lab animals used each year.

42. Which of the following is mentioned as an alternative to replace animal experiments? (A) Statistical studies. (B) Computer models. (C) DNA planted in animals. (D) Tissue from dead animals.

43. What usually happens to unsuccessful animal experiments? (A) They are not revealed to the public. (B) They are made into teaching materials. (C) They are collected for future publication. (D) They are not removed from the research topic list.

44. What is this passage mainly about? (A) The food network in nature. (B) The construction of orb webs. (C) The network of geometrical studies. (D) The environmental challenges for spider webs.