20.In October 2007,the Chang'e-l satellite was successfully __at Xichang.
A、launched
B、presented
C、regulated
D、engaged
42.What were the Greeks famous for?
A、The overall planning of a city or a town.
B、The artistic decoration of the buildings.
C、The practical functions of the buildings.
D、The system of water supply and transportation.
Directions:In each of the following groups of words,there are four underlined letters or letter combinations marked A,B,C and D.Compare the underlined parts and iden-tdtify the one that is different from the others in pronunciation.Mark your answer by blackening the corresponding letter on the Answer Sheet.