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【单选题】
病毒研究工作的迅猛发展取决于A.
光学显微镜
B.
暗视野显微镜
C.
紫外显微镜
D.
电子显微镜
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】听力。选择与你所听到的句子意义相符的选项。 1. Can I help you? A. Can you help me? B. What can I do for you? C. Thank you very much. D. Please do it like that. 2. We usually have our evening meals at fif to six. A. We ...
【单选题】No one can avoid being influenced by advertisements. Much as we may pride ourselves on our good taste 9 we are no longer free to choose the things we want, for advertising exerts a subtle influence on...
A.
In spite of our good taste , we still may be forced by advertisements to buy what we do not want.
B.
Our good taste will guide us to buy the things we want despite advertisements.
C.
Advertisements have often neglected human nature.
【单选题】— How can I apply for an online course? — Just fill out this form and we _____ what we can do for you. [ ]
A.
see
B.
are seeing
C.
have seen
D.
will see
【简答题】A．It's nothing. B．No, there isn't. C．Yes, I'll give you. D．Certainly, what can I do for you?
【单选题】用pH试纸测定食用白醋的酸碱度，如果先将pH试纸用蒸馏水润湿后，再把白醋滴在试纸上，测得的pH与白醋实际pH比较（ ）
A.
前者偏高
B.
前者偏低
C.
两者相等
D.
难于确定何高何低
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