完形填空 先通读下面的短文，掌握其大意，然后在A、B、C、D四个选项中选出可以填入相应空白处的最佳答案。
John Brown was a shopkeeper. He sold and repaired watches in his small shop. One day his cousin, Mike, came to the shop and said to him, “I’ve lost my job. Do you 1 if I work in your shop?” “Certainly not. I’ll teach you everything I know about watches,” John told Mike. For the first few weeks, Mike worked very hard. He was polite and helpful to the customers (顾客). He cleaned the shelves and 2 where everything was in the shop. John was very pleased with him. While Mike looked 3 the front of the shop, John was able to work and build up the repair business in the back room.
After a month and a half, Mike asked, “Is there anything else you want to 4 me?”
“Yes, Mike, there is,” John said. “It’s time I taught you the secret of our 5 .”
“I think I know that,” Mike said. “You buy watches at one price and sell them at a higher price. The 6 in price is our profit (利润).”
“That’s true, but it’s not where we make most of our profit,” John said. He 7 a watch from the counter (柜台). “Do you think this watch is a good one?” he asked Mike. “No, I don’t think so. It’s a cheap one,” the young man answered. “We can’t make much profit from selling those. Perhaps only a few dollars each.”
“That’s where you are 8 , my boy,” John said. “Those watches make more profit than any other watch in the shop.”
“Could you tell me 9 those cheap watches make more profit?” Mike asked.
“They are really cheap, but they are always 10 ,” John told him. “We make our profit from repairing them.”
1. A. worry B. mind C. know D. agree
2. A. showed B. answered C. learned D. explained
3. A. after B. for C. at D. towards
4. A. give B. present C. test D. teach
5. A. plan B. experience C. success D. message
6. A. discount B. choice C. difference D. level
7. A. took away B. picked up C. put down D. asked for
8. A. careless B. impatient C. unlucky D. wrong
9. A. why B. when C. where D. whether
10. A. improving B. working C. changing D. breaking