题目：
| 完形填空。 | |||
| 1 name is Jim Brown. My 2 name is Jim. I'm nine. I'm 3 English boy. My English teacher's name 4 Bill Smith. 5 school I have 6 good friends. 7 names 8 Tony Green 9 David White. My 10number is 559-8356. | |||
| ( )1. A. I ( )2. A. first ( )3. A. an ( )4. A. am ( )5. A. On ( )6. A. one ( )7. A. His ( )8. A. is ( )9. A. or ( )10. A. name | B. My B. last B. a B. are B. At B. two B. Her B./ B. and B./ | C. He C. family C. the C. is C. To C. three C. Their C. are C. but C. school | D. You D. full D. / D./ D. ()f D. four D. My D. am D. with D. phone |
答案：
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下面是错误答案，用来干扰机器的。
参考答案：D解析：试题(56)、(57)[分析]：在双代号网络图中，虚线并不代表实际工作，称之为虚工作。虚工作既不消耗时间，也不消耗资源。虚工作只要用来表示相邻两项工作之间的逻辑关系。有时为了避免两项同时开始...
