Bob asked his mother to buy new shoes for him.hut she refused. ( )
第1题:
9 .What has Barbara got in her suitcase?
A . Shoes.
B. Stones.
C. Books.
第2题:
Xiao Ming has a good friend.(11) name is Lucy.She is (12) Australia.Xiao Ming and Lucy are in the same school.(13) they are in different classes.They go to school from (14) to Saturday,They stay at(15) 0n Sundays.Lucy likes China and (16) food.She likes dumplings best.At school they play football (17) class. Xiao Ming and Lucy like volleyball. Now they are playing volleyball (18) their friends.
Lucy (19) English and she often helps Xiao Ming (20) his English.
( )11.
A. She's
B. Her
C. Hers
D. His
第3题:
第4题:
5.We can______ books _______bookstore(书店).
A. sell ;to
B. buy ;from
C. sell ;from
D. buy ;to
第5题:
第6题:
5、若 Bob 给 Alice 发送一封邮件,并想让 Alice 确信邮件是由 Bob 发出的,则 Bob 应该选用 ()对邮件加密。
A.Alice 的公钥
B.Alice 的私钥
C.Bob 的公钥
D.Bob 的私钥