D.display 正确答案： B

73. You can（）a file when you no longer need it. A.rename B.move C.copy D.delete

正确答案： D

74. When you create an account,you are typically asked to enter a username and（）. A.key

B.keyword C.password D.user ID 正确答案： C

75. With（）you can communicate in real time with people all around the world. A.wed page B.wed chat C.web site D.E-Mail

正确答案： B