判断以下语法表述的对错。In the sentence “Please look into this problem carefully.”, the “look into” is a phrasal verb.
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判断以下语法表述的对错。In English, the three non-finite verb forms are the infinitive, the -ing participle, and the -ed participle.
A. 对
B. 错
下列哪项不是受体与配体结合的特点
A. 高度专一性
B. 高度亲和力
C. 不可逆性
D. 可饱和性
E. 非共价键性