[答案] D. available.

　　[注释] available. (=capable of being used; that may be obtained) 可用的, 有效的, 可得到的。例如：1) There are no doctors available in the remote areas. (在边远地区没有大夫。) 2) There tickets are available for on month. (这些票有效期一个月。)acceptable 可以接受的：None of the suggestions was acceptable. advisable 明智的, 可取的, 适当的：I think it advisable that he be assigned to the job. (我认为指派他干这项工作是可取的。) adaptable 能适应的：He is an adaptable man and will soon learn the new work.www.examw.com

　　[答案] D. cut down.

　　[注释] cut down

　　[答案] A. accepted

　　[注释] receive 收到, 接到, 指“收, 接”这一动作; 而accept 是经过考虑“接受”下来, 表示当事人的态度, 如：I received the present, but I did not accept it. (我收到了这件礼物, 但我没有接受。)

　　[答案] B. admitted.

　　[注释] admit sb. to (=allow sb. or sth. to enter; let in) 允许某人某物进入; 让......进入：1) Children are not admitted. (儿童免进。) Only one hundred boys are admitted to the school the school every year. (这所学校每年只收100 名男生。) admit (=acknowledge; confess)承认, 供认：1) We have to admit that he is a highly competent man. (我们不得不承认他是一位能力很强的人。) 2) The thief admitted his crime. 3) She admitted having read the letter, 4) I admit breaking the window. 注意admit 后可接动名词的一般式或完成式。5) We must admit the task to be difficult。注意admit 也可以接复合结构。allow 和permit 后均可接sb. to do sth., 故不合本题题意。approve sth. 批准; approve of doing sth. (=think well of) 赞成, 赞许：1) I am afraid they won't approve of your going there. (恐怕他们不会赞成你去那里的。) 2) I don't approve of your way of looking at things. (我不赞同你看待事情的方法。)

　　[答案] C. comply [注释] comply with 遵守。