由以下五种不同基团两两结合而形成的化合物，能与NaOH溶液反应的共有
①—CH3 ②—OH ③—C6H5 ④—CHO ⑤—COOH
| A．6种 | B．5种 | C．4种 | D．3种 |
相关试题
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
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