皮皮学，免费搜题
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搜题
【单选题】
婴幼儿必须氨基酸除了成人的8种之外，还需要（）A.
蛋氨酸
B.
色氨酸
C.
组氨酸
D.
亮氨酸
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】– Hello. Can I talk to David? -- ______________
A.
Hold on, please.
B.
Yes, I’m David.
C.
Sorry, Mike is not here.
【单选题】听力原文：M: Hello. How can I help you today? W: Hello. I'd like some information on the telephone banking services offered at by your bank. M: Cogently. What would you like to know? W: How do I sign up? M...
A.
Economy.
B.
Banking.
C.
Stocks.
D.
Accounting.
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