资料题：Why do the stars look much smaller than the sun? Because（　）。

In Cardiff I was put to work in the furniture department at one of the local stores.It was a large, fairly old - fashioned place, run, like my parent company in London, by a group of relatives.Being only a temporary member of staff, I was in a very fortunate position.The others, particularly the older members of the staff, were naturally committed to producing good sales figures.I was more of an observer.If I made a sale, I was pleased, but if I didn't, the disappointment was by no means unbearable.I was really there to observe and learn, and as I had no intention of making a career in the furniture business, I wasn't too diligent about: that either.One salesman in his late middle age once revealed his insecurity by accusing me of trying tosteal one of his customers.Nothing could have been further from the truth, but he demanded that I go to the stockroom with him to settle the matter.He was very small and thin, but to my amazement he started dancing about among carpets and wardrobes, working with his arms furiously and calling me to"put me up".I couldn't put anything up- I was too busy rolling on a four-foot six-inch spring - interior mattress, helpless with laughter.Eventually he saw the joke too, and we went off to the staff canteen for a conciliatory cup of tea.