1. Some of the gun transactions are unsuccessful mainly because ____.

1. it is not profitable as the underground price of gun far exceeds legal rice
2. Chicago has surprisingly tough restrictions on the ownership and business of guns
3. the dealers are unable to guarantee whether the deal is really going to happen or not
4. it is hard to testify the quality of the guns in actual situations

2. Compared with the gun market, the drug market can be "fat" mainly because ____.

1. it hardly attracts the police's attention due to the flexibility of the business
2. the drug dealings are taking place in higher frequency
3. there are no fixed and formal spots for drug dealing
4. drug is affordable to a larger number of people

3. The word "cumbersome" (Line 4, Paragraph 5) most probably means ____.

1. transparent
2. troubling
3. horrible
4. stupid

4. The reason why the authors argue that the gun market may be threadbare partly be- cause the drug market is so plump is ____.

1. that the drug transaction is more profitable than gun-dealing
2. that the police are more dedicated to the gun-dealing than to the drug-dealing
3. that the gang-leaders are suppressing the gun-dealing in order to maintain their profit from drug
4. that the gang-leaders are worried about the effect of crime on commerce

5. Towards the future of gun-dealing, the author's attitude is ____.

1. pessimistic
2. optimistic
3. desperate
4. sorrowful

(Reference keys.)