问题
单项选择题
甲基苯丙胺的前体物质是
A．麻黄碱
B．烟碱
C．毒扁豆碱
D．古柯碱
E．罂粟碱
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
甲基苯丙胺的前体物质是
A．麻黄碱
B．烟碱
C．毒扁豆碱
D．古柯碱
E．罂粟碱
参考答案：A
| 选用方框中适当的句子完成对话。 | |
| A: What's that over there? B: 1 A: Over there, on the table. B: 2 A: That's my favorite food. What about you? B: 3 A; Are you hungry now? B: 4 A:I have milk here. Do you like it? B: No, thanks. My favorite drink is tea. A: Oh, there's lots of tea. 5 B: Thanks a lot. A: You're welcome. | |
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