问题
单项选择题
某一化合物在紫外吸收光谱上未见吸收峰，在红外光谱的官能团区出现如下吸收峰：3000Cm-1左右，1650Cm-1左右，则该化合物可能是（）。
A.烯烃
B.醇
C.酮
D.芳香族化合物
答案
参考答案：A
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某一化合物在紫外吸收光谱上未见吸收峰，在红外光谱的官能团区出现如下吸收峰：3000Cm-1左右，1650Cm-1左右，则该化合物可能是（）。
A.烯烃
B.醇
C.酮
D.芳香族化合物
参考答案：A
| 根据短文内容，在方框内选择合适的词并用其适当形式填入空格内。 | |
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| Lynn and Paul are in Pairs this weekend. They 1 from London and get to the airport at 10:00 am. on Saturday morning. They 2 a taxi from the airport to their hotel in the center of Pairs. On Saturday afternoon, Lynn 3 to the bookstore and 4 a lot of comic books. In the evening, they 5 dinner in a French restaurant. On Sunday they 6 the Louvre Museum where they 7 the "Monalisa". They 8 all the things in the museum and they 9 very tired. They go home on Sunday evening. |