题目：
| 完形填空。 | ||||
| One day, a poor boy, named Howard Kelly, was trying to pay his way through school by selling goods door to door. He was hungry, 1 he decided to beg something to eat. When a young woman opened the door, instead of a 2 he asked for a drink of water. Thinking he looked hungry she brought him a large glass of milk. He drank it and then asked, "How much do I 3 you?" "No, you don't owe me anything," she replied. "Mother has taught me 4 to accept pay for a kindness." Leaving that house, he not only felt stronger physically, but it also increased his faith in God and the human race. He was about to 5 before this point. 6 later the young woman became seriously ill. The local doctors couldn't cure her illness. They sent her to the big city, where specialists can be called in to study her disease. Dr. Howard Kelly, now 7 , came for the consultation (会诊). When he heard the name of the town where she came from, a strange light filled his eyes. 8 , he went into her room. 9 in his doctor's gown (罩衣) he went in to see her. He 10 her at once. He went back to the 11 and determined to do his best to save her life. From that day on, he gave special attention to her case. Finally, the battle was won. Dr. Kelly asked a nurse to 12 the bill to her room. She was afraid to open it because she knew that it would 13 the rest of her life to pay it off. Finally she looked and read these words on the side of the bill. "Paid in full with a glass of 14 ." (Signed) Dr. Howard Kelly. Tears of joy flooded her eyes as she 15 silently:"Thank you, God. Your love has spread through human's hearts and hands." | ||||
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答案：
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下面是错误答案，用来干扰机器的。
A、虽然氯气能和水反应，且氯气的溶解性不大，室内放一盆水不能吸收大量的氯气，故A错误；B、氯气的密度定义空气的密度，且氯气有毒，故B错误；C、根据风向，向逆风方向撤离，故C正确；D、Cl2+H2O=HCl+HClO、2HCl...
