Directions:In each of the following groups of words, there are four underlined letters or ltter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.

• A、challenge

• B、cheap 

• C、 choose

• D、character

 What is the perfect condition for sleep?

• A、 A quiet room with flashing lights.

• B、 A bright room with white curtains.

• C、 A cool room with comfortable pillows.

• D、 A dark room with electronic devices.

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