题目

AFrom：jovangagic56@memail．comTo：kmallory@LN．orgSubject：Hi!Dear Mr．Mallory，I am writing to tell you my deep disappointment for my experience at Lingua Nova English summer school in the first two weeks of July．I had been thoroughly looking forward to learning English and learning about culture in the UK，but I am afraid that my time at your summer school failed to live up to my expectations．Your brochure states that the student accommodation is situated in the heart of Edinburgh．This is misleading as my accommodation was，in fact，situated a good fifty minutes bus ride fro18．已知-25a2mb和7b3-na4是同类项，则m+n的值是（　　）A．2B．3C．4D．5