Question set III Suppose we have an array A containing 9 integers (with the first index being 0): 240, 119, 682, 341, 225, 556, 122, 661, 245 Please answer the following questions. 【題組】14. We use Quick sort to sort the aray in ascending order. Which of the following are false after the first
partition? (A) A[0]=240; (B) A[8]=682; (C)A[3]=341; (D) A[7]=661.
【已刪除】Passage 3
According to the World Resources Institute, approximately 38% of the world’s population could face chronic water
shortages by the year 2025. It is estimated that humans use 45 times as 26 water as they did three centuries ago. All over the
globe, humans are pumping water out of the ground faster than it can be 27 . The United Nations recently outlined the
severity of the problem, saying that more people will suffer a high level of water stress if consumption continues at current rates.
Several factors contribute to water shortages. Irrigation, which grows 40 percent of the world’s food and makes it possible
to feed the plant’s 6.2 billion people, 28 the largest percentage of water use. Another problem is that people don’t see the
need to conserve water. If people can 29 the seriousness of the situation, they may be more willing to take action and use
less water. In addition, it has been found that some places were rife with broken water pipes, leaky toilets, and faulty plumbing
30 a lot of water was simply being wasted.
【題組】30. (A) in where (B) which (C) wherever (D) whereby
6. Consider the titration of 100 mL of 0.05 MNH3 (Kb = 1.8 x 10-5) by 0.1 MHC1. (20 pts)
Calculate the pH of the resulting solution after the following volumes of HC1 have been added.