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【单选题】
下列各项对维生素B1的荧光法检测原理，叙述正确的是（）。A.
用碱性铁氰化钾将硫胺素氧化为具有深蓝色的荧光硫色素
B.
用酸性铁氰化硫胺素氧化为具有深蓝色的荧光硫色素
C.
用碱性铁氰化钾将硫胺素氧化为具有黄绿色的荧光硫色素
D.
用酸性铁氰化钾将硫胺素氧化为具有黄绿色的荧光硫色素
E.
用碱性铁氰化钾将硫胺素氧化为具有红色的荧光物质
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【单选题】Which of the following is not described by the author as benefits of working while studying
A.
He doesn't have to pay for debts after graduation
B.
He feels it is always fun earning money while learning
C.
He has made his parents happy by becoming a responsible adult
D.
He has relieved his parents of the burden to pay for his tuition
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【简答题】How to Teach a Child Respect As a child grows out of being an infant（婴儿）and begins to notice and react to the world around them, you may find yourself wondering how you possibly pass all of the things...
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【单选题】As a adult ,you should be _for you behavior.
A.
responsible
B.
respon
C.
shift
D.
address
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