One summer evening as I was caking dinner, there was a knock at the door. I 1it and saw a truly bad-looking man. But his voice was 2as he said, “Good evening. I come to see if you have a3for just one night. I came for a treatment this morning from the eastern shore, and there’s no bus till next morning.” He told me he had been hunting (寻找) but with no4. I told him we would find him a bed, but to rest on the porch (门廊). I went inside and prepared  dinner. When we were ready, I asked him if he would like to 5 us. “No, thank you. I have plenty.” When I had 6 the dinner, I went out to talk with him. It didn’t take a long time to see that this old man had oversize heart crowded that tiny body. He told me he fished for a living to 7 his daughter, her five children, and her husband, who was hopelessly disabled from a back injury. At bedtime, we 8a bed in the children's room for him. On his next trip, as a gift, he brought a big fish and some fresh oysters (牡蛎) I had never seen. In the years he came to9 overnight with us, and there was never a time he did not bring us some fish or vegetables from his garden.
    I know our family will always be thankful to have known him, from him we learn what it was to accept the bad without a complaint and the good10thanks.   

小轿车以20m/s的速度在平直公路上匀速行驶，司机突然发现正前方有个收费站，经10s后司机才刹车，使车匀减速运动10s恰停在缴费窗口，缴费后匀加速到20m/s后继续匀速前行．已知小轿车刹车时的加速度为2m/s²，停车缴费所用时间为30s，启动时加速度为1m/s²．

有163个鸡蛋，每30个装一箱，这些鸡蛋需要装5个箱子。