皮皮学，免费搜题
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搜题
【单选题】
重金属检查中,加入硫代乙酰胺比色时,溶液最佳pH值是A.
1.5
B.
3.5
C.
2.5
D.
﹥7
E.
10.0
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【简答题】药物定量分析中,操作中过滤时为什么要用干燥滤纸和取用续滤液进行试验?
【简答题】The idea that the Chinese eat strange things is __________ but very _____________ for many western tourists.
【多选题】Listen to the conversation again and choose the things tourists are allowed to do in Antarctica.
A.
They clean their clothes before going on land.
B.
They can eat on land, but should take away the trash when they leave.
C.
They can take away a little bit of snow as souvenir.
D.
They can take pictures.
E.
They can get near to and touch the penguins.
【判断题】If you describe a place as touristy, you mean it is full of tourists or full of things for tourists to buy and do.
A.
正确
B.
错误
【简答题】Things tourists should bring:
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