题目

一片稻田就是一个小小的生态系统，这里有杂草与水稻争取阳光、养料、水分和空间，蝗虫、三化螟在稻秧上取食，青蛙一旦发现害虫会迅速将其捕获……下列有关该生态系统的说法中，不正确的是（） A . 阳光、水分、养料等都能影响水稻的生长，它们属于非生物因素 B . 如果人们大量捕捉青蛙，则会使蝗虫、三化螟等害虫猖獗，会造成水稻减产 C . 作为一个完整的生态系统，上述资料中没有提到的成分是分解者 D . 杂草与水稻每个细胞内的能量转Our house was directly across the street from the clinic entrance of John Hopkins Hospital in Baltimore. We lived downstairs and rented the upstairs rooms to the patients at the clinic.One evening as I was fixing supper, there was a knock at the door. I opened it to see a truly awful-looking man. He’s hardly taller than my eight-year-old son. “Good evening. I’ve come to see if you’ve a room. I came for a treatment this morning from the eastern shore, and there’s no bus till morning.” He told me he’d been hunting for a room since noon but with no success. “I guess it’s my face…I know it looks terrible, but my doctor says with a few more treatments…” For a moment I hesitated, but his next words convinced me: “I could sleep in this chair on the porch. My bus leaves early in the morning.”I told him we would find him a bed. When I had finished the dishes, I talked with him. He told me he fished for a living to support his five children, and his wife, who was hopelessly crippled (残疾的) from a back injury. He didn’t tell it by way of complaint. Next morning, just before he left, as if asking a great favor, he said, “Could I come back and stay the next time?” He added, “Your children made me feel at home.”On his next trip he arrived a little after seven in the morning. As a gift, he brought a big fish and the largest oysters (牡蛎) I had ever seen. I knew his bus left at 4:00 a.m. and I wondered what time he had to get up in order to do this for us.In the years he came to stay overnight with us and there was never a time that he did not bring us vegetables from his garden. I know our family always will be grateful to have known him; from him we learned how to accept the bad without complaint when facing the misfortune.1.Why did the author agree to let the man spend the night in his house at last?A. Because the man said others refused to accommodate him.B. Because the man said he would not cause much inconvenience.C. Because the man said he had come from the eastern shore.D. Because the man said he had been hunting for a room since noon.2. How long would it take the man to travel from his home to Baltimore by bus?A. About 1 hour. B. About 2 hours.C. About 3 hours. D. About 4 hours.3.From the text we can know that __________.A. the author’s children were kind and friendly to the man B. the man was fed up with his hard-work and his familyC. John Hopkins Hospital provided rooms for the patients to live inD. the author and his family were thought highly of by his neighbors4.The author’s family were grateful to know the man because __________.A. he often brought them fish and vegetables from his gardenB. he paid them money for his stayingC. he taught them how to accept the bad without complaintD. he stayed only overnight with the writer’s family