阅读理解。 Starting a business takes time, and energy—not to mention funding. So it helps if you are enthusiastic about what you do. Some business owners, like Ms Walton, have managed to turn their hobby into a business. Ms. Walton is a former personal trainer and the founder and owner of a travel agency for runners of various adventure (冒险) races. She describes running a business as "a big job" and says there have been lots of difficulties to overcome along the way. A challenge for new companies is marketing, as business owners often need to create a website and develop a brand strategy (策略) for the company. As she explains, being present at these events attracts the attention of the public to their business and enables the brand to reach its target market. She adds that her relationship with her banker has supported her through the ups and downs of running her company. A banker can help with small business financing, your business banking requirements and also advise on ways to expand your business.1. According to the first paragraph, to start a business, you should be ____ .A. healthyB. wealthyC. efficientD. enthusiastic2. Why does Ms. Walton say running a business is a big job? A. You have to take part in adventure races.B. You have many difficulties to overcome.C. You must travel a lot at home and abroad.D. You need to work on weekends frequently.3. One thing business owners often need to do for marketing is ____ .A. to hire a team of expertsB. to expand overseas marketC. to build up a brand strategyD. to find a location downtown4. The expression "the ups and downs" in Para. 4 means ____ .A. present and past situations B. good and bad experiences C. chances and challenges D. happy and sad feelings5. According to the passage, a banker can help small businesses in ____ .A. financingB. advertising C. hiring personnel D. training their staff