问题
单项选择题
体液中含量最高的免疫球蛋白是
A．IgG
B．IgA
C．IgM
D．IgE
E．IgD
答案
参考答案：A
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体液中含量最高的免疫球蛋白是
A．IgG
B．IgA
C．IgM
D．IgE
E．IgD
参考答案：A
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| A young man and an old man were waiting for a bus at a station. They sat 1 each other. "What's that in your bag?" asked the young man, pointing to a big bag beside the 2 . "Money, nothing but money," answered the old man. The man could 3 believe his own ears. "What?" he said to himself in surprise."So much money? My God! How I 4 to be able to get so much money!" Then he began to think about how to get the money. The old man 5 tired and it seemed that he could hardly keep his eyes open. "Are you tired, sir?" asked the young man. "Then you'd better lie down on the 6 and have a good rest. Don't worry about 7 . I'll wake you up in time." "All right. It's very kind of you, young man." The old man lay down and 8 he fell asleep. The young man took the big bag gently. 9 when he was just going to run away, he found a corner of his fur coat was 10 the old man's body Several times he tried to pull it out, but he couldn't. At last he took off his 11 and went away with the bag. The young man ran out of the station as quickly as his 12 could carry him. He reached a place, and there he thought the old man couldn't 13 him, he stopped and quickly opened the bag. To his surprise, there was 14 but old newspapers in it. He hurried to the station at once. But when he got there, he found the old man had 15 . | ||||
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