26, C - American Falls (Thông tin nằm ở đoạn: “...Niagara Falls actually consists of two falls, the American Falls and the Horseshoe Falls. The former is on the US side of the border…”)
27, A - has 85% water of the Niagara Falls flowing over (Thông tin nằm ở đoạn: “About 85% of the water in Niagara River flows over the Horseshoe Falls”)
28, B - beautiful (= spectacular: adj, hùng vĩ, đẹp mắt)
29, B - waterfalls (“them” thay thế cho từ “boiling water of the falls” được nhắc đến trước đó)
30, D - The whole falls lie on two countries (Thông tin nằm ở đoạn: “Located on the Niagara River along the border between the United States and Canada…”)
38, How large is this jungle? (Rừng này rộng bao nhiêu?)
