A．marketingB．advertisingC．salespeopleD．agents A: marketing B: advertising C: salespeople D: agents

49.What are the best known information agents? A: Personal agents B: User agents C: Predictive agents D: Buyer agents

What would be the biggest challenge when going to the agents? A: Some agents may have no legal professional title. B: Some agents may work on their own. C: Some agents don’t speak much English. D: Some agents won’t like to help foreigners.

(__) agents(造影剂)

 antiviral agents: 

antifumgal agents:

Anticholinesterase agents: 

Travel Agents Travel agents can recommend 1 and arrange 5 other things for tourists. If you plan to travel abroad, travel agents can offer your information on three aspects: A._____ B.required papers C. Travel agents promote their services in 4 ways. To compete with others, many travel agents now aim at traveling for 5 people.

趋化因子(chemotactic agents)

Cell Cycle-Specific Agents (CCSA) include A: antimetabolites B: camptothecin C: plant alkaloids D: alkylating agents