17 Mr. Davis insists his employees ____ coming to work on time.
(A) to
(B) for
(C) on
(D) in

13 ______ the advent of cyberculture, the Internet communication decentralizes the structures of traditional social alliances.(A) As(B) For(C) With(D) In

14 A mystery unsolved, subject to endless speculations, has the power to haunt us as long as memory persists. (A) We will keep on thinking and wondering about an unsolved mystery as long as we remember it. (B) A mystery solved will haunt us persistently. (C) A mystery is likely to speculate endlessly when we still have power. (D) In order to solve a mystery, we should just forget about it.

15 Mary’s parents died when she was three; she has never had a home ______ and has to grow up in an orphanage.(A) for her own(B) at her own(C) of her own(D) with her own

16 The recent trade tensions show just how integral the rules of the global trading system, and the World Trade Organization that settles judicially those rules, have become to the way countries, rich and poor alike, think about trade policy. (A) World Trade Organization solves the recent trade tension of the rich and poor countries. (B) The trade policies of the rich and poor countries have been judicially solved by World Trade Organization. (C) The trade tensions between the rich and poor countries reveal the integration of the global trading system. (D) The trade tensions between the rich and poor countries necessitate the effort by the World Trade Organization to settle rules of the global trading system.

18 According to the passage, which of the following energy forms is NOT from the Sun? (A) Water power (B) Nuclear power (C) Wind power (D) Gas power

19 Hydroelectric power uses to generate electricity. (A) water (B) wind (C) gas (D) sunshine

20 According to the passage, what does “stored sunshine” refer to? (A) The solar energy equipment that can save the heat of the Sun (B) Oil and coal that are stored on earth (C) A special power plant that generates heat (D) A futuristic shop that sells heat stored from the Sun

21 What is the attitude of the author toward the use of solar energy? (A) Pessimistic (B) Confusing (C) Indifferent (D) Optimistic

22 (A) That advice is backed by an extraordinary series of studies. (B) This recognition may offer valuable clues on how to lead a happier life. (C) Psychologists have also begun to look into who is happy, who is not, and why. (D) Recent research reveals that happiness and unhappiness are not really flip sides of the same emotion.

23 (A) The capacity for joy is a talent you develop largely for yourself. (B) This recognition may offer valuable clues on how to lead a happier life. (C) Psychologists have also begun to look into who is happy, who is not, and why. (D) Recent research reveals that happiness and unhappiness are not really flip sides of the same emotion.