Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word for each of the blanks from 66 to 75.

The Eighth Wonder of the World

The Thames Barrier is a major part of the flood defence scheme for protecting London (66)________ rising water levels. The defenses (67)________include raised river embankments and additional flood gates at strategic points, including the Barking Bauier. The unique structure that is the Barrier spans the 520-metre wide Woolwich reach and consists of 10 separate movable gates, each pivoting and supported between concrete structures which house the operating machinery.

When raised, the four main gates (68)________stand as high as a five-storey building and as (69)________as the opening of Tower Bridge. Each (70)________3700 tonnes. During the first twelve years of (71)________, the Barrier has been closed twenty nine times to protect London.

(72)__________ x  file Barrier from the comfortable Cafeteria. Picnic on the riverside embankment. Enjoy beautiful views from the riverside walk. Visit the shop which stocks a large selection of souvenirs, books and Barrier information.

There is a children’s play (73)________suitable for 4 - to 12-year olds, (74)________adjacent to the riverside walk. A visit to the spectacular Thames Barrier is a (75)________experience.

Điền vào ô số 74