题目

Many teenagers love mysteries, but usually they can’t find the ones that suit them the best. Are you one of them? Well, don’t worry! Here are some top-selling mysteries for teenagers. There must be one here that will win your heart!Run Away From Mr. Lemoncello’s LibraryMr. Lemoncello is a famous inventor in town. Twelve kids are invited to visit his new library. This, however, is not a good place to spend the night! The kids must work together to solve the clues (线索 ) and run away! Buy now!￥ 38.60 (hardcover) ￥34.70 (e-book)From the Mixed-Up Files of Mrs. Basil E. FrankweilerCl1．等物质的量浓度的下列稀溶液：①乙醇、②苯酚、③碳酸、④乙酸，它们的pH由大到小排列正确的是（　　）A．①②③④B．③①②④C．④②③①D．①③②④