16. Moviegoers know that many special effects are created by computers,they often don' tknow is that these scenes still require a lot of work.
A、That
B、 Whom
C、 What
D、How
I.Phonetics ( 5 points)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-tify the one that is different from the others in pronunciation. Mark your answerby blackening the corresponding letter on the Answer Sheet.