試題詳解

12
(A)Roller coasters continued to develop as their popularity grew.
(B)They finally made their comeback in the 1970s, when “The Racer” was erected in Ohio.
(C)In the winter, wooden hills were constructed, fashioned like half-tube slides and packed with ice.
(D)Many people think roller coasters are a recent invention designed to satisfy modern thrillseekers.