Part III Vocabulary and Structure (20 minutes)
Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A, B, C and D. Choose the ONE that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center. 【題組】49. Eye contact is important because wrong contact may create a communication ________.
(A)) tragedy
(B)) vacuum
(C)) question
(D)) barrier