59.（）

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

23.（）

• A、natural 

• B、safe

• C、strange

• D、clear