重新调整下面哪种防火墙的类型可以防止通过FTP在内部下载文件（）。
A.电路级网关
B.应用网关
C.包过滤
D.筛选路由器
参考答案：B
用所给单词的正确形式完成句子。
1．It's my (one)time to come to China．I like it very much．
2．These (play)do very well in the match．They are really great．
3．Thank you for (organize)the class trip to Nanjing．
4．June 1st is (child)Day．
5．I (like) basketball because I am not very tall．It's hard for me．
哥哥和弟弟两人的总钱数比哥哥的钱多15.6元，比弟弟的钱多24.5元，两人共有多少元钱？
