D.display ÕýÈ·´ð°¸£º B

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

ÕýÈ·´ð°¸£º 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 ÕýÈ·´ð°¸£º 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

ÕýÈ·´ð°¸£º B