完形填空。 Big Ben? It's not the name of a person. It's a famous 1 in London. It is part of a very big clock at the top of a tower (塔). The minute hands of the clock 2 more than four metres long. The clock has four 3 . You can see what 4 it is from any side (面). The name of the bell comes 5 Sir Benjamin Hall. The tower is about 150 years old. The bell makes a loud 6 every hour. On New Year's Eve, millions of people listen to it on TV! (     )1. A. person (     )2. A. are (     )3. A. feet (     )4. A. time (     )5. A. for (     )6. A. sound B. bell B. is B. hands B. food B. from B. voice C. place C. have C. noses C. weather C. at C. noise D. animal D. has D. faces D. place D. to D. hearing