题目

Frankenstein, written by Mary Shelley, turned 200 years old in 2018! It has been called the first true work of science fiction and the first English horror novel. The story has been told over and over again—not just in books, but in movies and television shows. To celebrate, New York City s Morgan Library & Museum has a special exhibit on the writer and the book.The reason for the success is that Doctor Frankenstein and his creature, the monster, live on in numerous remakes, shows, and even comic books.Mary Shelley’s classic is one of the most famous horror stories of all time. But Fra下列反应中，属于取代反应的是④（　　）①C2H4+H2催化剂△ C2H6               ②CH4+Cl2光照CH3Cl+HCl③2CH3CH2OH+O2Cu△2CH3CHO+2H2O④+HO-NO2浓硫酸60℃+H2O． A、①②B、③④C、①③D、②④