21. Low-dose aspirin lowers the risk of heart attacks in healthy men, but not in healthy women, ________it does protect women against stroke.
(A) though
(B) and
(C)because
(D) if

17. Coconut oil is commonly sold as a health food and some claim the fat in it may be better for us than other saturated fats. The AHA (American Heart Association), ______, says there are no good studies to support this. (A) in addition (B) likewise (C) however (D) instead

18. Surprisingly, the top 10% of employees with the highest productivity didn’t put in longer hours than anyone else – often they didn't even work eight-hour days. _______, the key to their productivity was that for every 52 minutes of focused work, they took a 17-minute break. (A) In addition (B) Likewise (C) However (D) Instead

19. One of the reasons for the decline in children ever born is that women delay having children ________ in the past. (A) compared to (B) contrast to (C) in contradictory to (D) compared with

20. Herbal extracts/supplements are often metabolized in the liver, and some may have a direct impact ____ the metabolizing of prescribed medications. (A) on (B) in (C) with (D) at

22. The lack of investors ________ their efforts to expand the company. (A) has been frustrated by them on (B) have frustrated them on (C) have been frustrated by them in (D) has frustrated them in

23. We have developed a new technique for detecting errors _____________. (A) in the manufacturing process (B) in the process of manufacture (C) on the processing manufacturer (D) along the process of manufacturing

24. Tensions in northeast Asia are among their _____ in decades. (A) the higher (B) the highest (C) highest (D) most highly

25. Art _______ any other commodity; the normal rules of economics simply do not apply. (A) unlike (B) is unlike (C) which is unlike (D) is unlike as

26. Which of the followings is the best title for the passage? (A) Patient-Physician Communication: Why and How (B) Medical Education: Now and Past (C) Physician and Patient: the Interaction and the Exam (D) How to Develop Physician’s Core Competence

27. According to the passage, which of the following is INCORRECT? (A) Patients who understand their doctors tend to have better compliance. (B) Nowadays, the communication and interpersonal skills of the physician-in-training can be developed and changed through training. (C) To change or modify the communication and interpersonal skills is unlikely. (D) The communication and interpersonal skills training is nowadays included in medical education.