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、land
B、lamb
C、father
D、ladder
Since computers were introduced, they____ to be useful tools for people weak in math.
A、had proved
B、have proved
C、 will prove
D、are proving
What is the best title for the passage?
A、What Can Doctors Do with Language Delay?
B、What Can Be Done about Kids with Language Delay?
C、How Can Language Delay Be Easily Detected?
D、How Can Parents Prevent Kids from Language Delay?