31. (A) profitable (B) harmful (C) relevant (D) touching

37. What is this sentence “You just open up six browsers.” in the second paragraph most likely to mean? (A) You can compare goods and their prices on different sites. (B) You do not have to take a rest but keep shopping all day. (C) You use several computers to avoid mechanical problems. (D) You use different computers to check if the colors of clothes are the same.