问题
单项选择题
霉变甘蔗中分离的毒素为（）
A.黄曲霉素
B.赭曲霉素
C.伏马菌素
D.3-硝基丙酸
E.青霉素
答案
参考答案：D
解析：甘蔗节菱孢霉产生的3-硝基丙酸（3-NPA），是一种强烈的嗜神经毒素，主要损害中枢神经系统。
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霉变甘蔗中分离的毒素为（）
A.黄曲霉素
B.赭曲霉素
C.伏马菌素
D.3-硝基丙酸
E.青霉素
参考答案：D
解析：甘蔗节菱孢霉产生的3-硝基丙酸（3-NPA），是一种强烈的嗜神经毒素，主要损害中枢神经系统。
When Mr. Smith retired(退休), he bought a small 21 in a village near the sea. He 22 it and hoped to live a quiet life in this house. But to his great surprise, many tourists came to see his house in summer holidays, for it was the most 23 building in the village. From morning to night there were 24 outside the house. They kept looking into the rooms through the windows and 25 of them even went into Mr. Smith’s garden. This was too much for Mr. Smith. He decided to ask the visitors to 26 . So he put a notice on the window. The notice said, “If you want 27 your curiosity(好奇心)，come in and look round. Price: twenty dollars.” Mr. Smith was sure that the visitors would 28 coming, but he was wrong. More and more visitors came and Mr. Smith had to 29 every day showing them around his house.“I came here to relax not to work 30 a guide（导游）,”he said angrily. In the end, he sold the house and moved away.
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