37. What may the researchers want to work on or to find out in future studies?
(A) An improvement in collecting data
(B) Possible applications of these findings
(C) The difference between species
(D) A source of this mental ability

33.(A)set aside (B) left out (C) dressed up (D) pulled down

34. Based on the article, primates (A) can't really count (B) can count to an unlimited number (C) can arrange different types of fruits (D) can figure out quantity

35. Based on paragraph 2, which of the following items, if picked by the pigeons, will make the data of the experiment consistent? (A) a card with a big number four on it (B) a card with four purple circles on it (C) four diamond-shaped cards (D) four cards of different shapes and colors

36. In the third paragraph, the underlined word "which" refers to (A) the pigeon (B) the experiment (C) the card (D) the image

38. Which characteristic of H5N1 is the biggest worry for epidemiologists?(A) its high mortality rate (B) its rate of spread(C) its ability to jump between species(D) its long dormant period

39. The underlined word "subjects" refers to(A) viruses(B) humans(C) ferrets(D) mutations

40. People not opposed to the publication of such research argue that(A) laboratory-made viruses are unlikely to survive in nature. (B) the usefulness of such knowledge outweighs any concern over bioterrorism.(C) causing a global pandemic is not what bioterrorists want to do.(D) scientists can test the effectiveness of the virus before it is released in nature.

41. In the article, the underlined word "classified" is closest in meaning to (A) undisclosed(B) categorized (C) controversial(D) hazardous

42. Which of the following statements might Michael Osterholm agree with?(A) Public objections to new technology are just normal panicked reactions.(B) Researchers have ultimate responsibility for the results of their research.(C) Advances in science still have to be made even though there are disputes and controversies.(D) Research projects can be abandoned if they cause more harm than good to the society.

43. Based on the examples in the first two paragraphs, which of the following words may be the LEAST perplexing to the writer's son?(A) heir(B) timid(C) elephant(D) tomb