问题
单项选择题
对沙门氏菌属进行（）试验为阳性。
A.水扬苷
B.ONPG
C.鸟氨酸
D.棉子糖
答案
参考答案：C
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对沙门氏菌属进行（）试验为阳性。
A.水扬苷
B.ONPG
C.鸟氨酸
D.棉子糖
参考答案：C
Many people like traveling for their holiday. They go to 1 , seaside or forests. Some people like 2 , so they like to visit some old interesting places. In many countries, the travel agency can help you 3 your holiday. You can tell the travel agency what kind of 4 you like, how much 5 you want to spend, and the travel agency will give you a lot of information about where to go, how 6 there, where to stay, and what kind of activities you can do there. 7 the holidays is 8 “Package” holiday. 9 is, you just pay the money, and the travel agency will plan 10 for you, the ticket for the train or plane, the hotel, the activities, and so on.
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