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【单选题】
自然保湿因子(NMF)中主要的水溶性酸类是( )。A.
透明质酸
B.
吡咯烷酮羧酸钠
C.
乳酸
D.
玉米谷氮酸
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反馈参考答案：
举一反三
【单选题】The question asked in the conversation is____________?
A.
What can I do for you
B.
Can you make it cheaper?
C.
Do you have a bigger size?
【单选题】关于音量的设置,以下说法错误的是?( )
A.
设置音量后，若想恢复到原来的音量，直接删除该积木就可以了。
B.
取值范围为0到100。
C.
音量值为0，表示静音。
D.
小于0视为等于0，大于100视为100。
【单选题】Listen to the conversation and tick the question asked in the conversation.
A.
What can I do for you?
B.
Can you make it cheaper?
C.
Do you have a bigger size?
【单选题】Tick the question asked in the conversation
A.
What can I do for you?
B.
Can you make it cheaper?
C.
Do you have a bigger size?
【单选题】The question asked by the teacher is very difficult ________.
A.
to be answered
B.
answering
C.
to answer
D.
to answering
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