31. What is the main subject of these paragraphs?
(A) Different opinions about zoos
(B) Zoos in different countries
(C) How to attract more visitors to zoos
(D) How to develop interests in zoology

27. Which of the following statements about Maryam Mirzakhani is correct?(A) She is an expert in biology.(B) She became a Stanford professor at the age of 40.(C) She fell in love with math as soon as she entered a girl's high school.(D) When she was a child, her family had a difficult life because of the Iran-Iraq war.

28. Which of the following statements about Einstein is correct?(A) He showed great intellectual power in his childhood.(B) He never failed a single test in his life.(C) He never encountered any frustration in his professional career.(D) His theory of relativity transformed the laws of Newtonian mechanics.

29. What does the phrase "keep plugging away" mean in the 5th paragraph?(A) to idle time away(B) to give up easily(C) to continue working diligently(D) to complain a lot

30. According to the paragraphs above, what makes a person shine in his/her chosen field?(A) High IQ(B) Right attitudes(C) A lot of money(D) Advanced technologies

32. What incident does the author use to illustrate the idea that a zoo can be a dangerous place for both humans and animals alike?(A) Animals don't have enough food to eat.(B) Zoo officials kill a gorilla after they find that a child has fallen into the animal's cage.(C) A gorilla runs out of its cage and hurts humans.(D) Visitors to zoos treat animals cruelly.

33. What question threatens the very existence of zoos?(A) How many zoos are needed in a country?(B) How much should a person pay to visit a zoo?(C) If we know that animals suffer in captivity, should we confine them in zoos?(D) How many zoos are in need of improvement?

34. What does the word "bolstered" mean in the 4th paragraph?(A) to support something(B) to contradict something(C) to ignore something(D) to ridicule something

35. According to the paragraphs above, which of the following statements is correct?(A) The number of visitors to zoos has declined sharply since 2005.(B) It is easy for zoos to balance the demands of entertainment, education, and conservation.(C) Animals can never experience the same mental-health illnesses suffered by humans.(D) Many zoo officials become emotionally close to the animals under their care.

1. As World War I drew to a close, Baltimoreans had good reason to be ________ about the future of the city.(A) quintessential (B) sanguine (C) chubby (D) eligible

2. Joshua is a ________ student and always does what he is told.(A) compliant (B) rebellious (C) aggressive (D) irrespective