4. The recent cooking oil scandals have led to calls for tougher ______ of sales of food products.
(A) tolerance
(B) guarantee
(C) regulation
(D) distribution

Problem 5. We toss two fair coins simultaneously and independently. If the outcomes of the two coins are the same, we win; otherwise we lose. Let A be the event that the first coin comes up heads, B be the event that the second coin comes up heads, and C be the event that we win. Which of the following statements is false? (A) Events A and B are independent. (B) Events A and C are not independent. (C) Events A and B are not conditionally independent given C. (D) The probability of winning is 1/2.

1. Mangoes are a _____ fruit here in Taiwan； most of them reach their peak of sweetness in July. (A) mature (B) usual (C) seasonal (D) particular

2. After spending most of her salary on rent and food, Amelia _____ had any money left for entertainment and other expenses. (A) barely (B) fairly (C) merely (D) readily

3. Helen let out a sigh of ______ after hearing that her brother was not injured in the accident. (A) hesitation (B) relief (C) sorrow (D) triumph

5. The airport was closed because of the snowstorm, and our ______ for Paris had to be delayed until the following day. (A) movement (B) registration (C) tendency (D) departure

6. Shouting greetings and waving a big sign, Tony _____ the passing shoppers to visit his shop and buy the freshly baked bread. (A) accessed (B) edited (C) imposed (D) urged

7. The recent flood completely _____ my parents’ farm. The farmhouse and fruit trees were all gone and nothing was left. (A) ruined (B) cracked (C) hastened (D) neglected

8. Silence in some way is as _____ as speech. It can be used to show, for example, disagreement or lack of interest. (A) sociable (B) expressive (C) reasonable (D) objective

9. Most of the area is covered by woods, where bird species are so _____ that it is a paradise for birdwatchers. (A) durable (B) private (C) realistic (D) numerous

10. Various studies have been _____ in this hospital to explore the link between a high-fat diet and cancer. (A) conducted (B) confirmed (C) implied (D) improved