In the following essay,each blank has four choices．Choose the best answer and writedown on the answer sheet．
Communicating via E—mail is by far the most common Internet activity．You can (71) with anyone in the world who has an Internet address or E—mail (72) with a systemconnection to the Intemet．All you need is (73) the Internet and an E—mail program．Two ofthe most widely used E．mail programs are Microsoft’s (74) and Netscape’S Navigator．Atypical E．mail message has three basic (75) ：header，message，and signature·

A．account
B．No．
C．user
D．administrator

某生产厂家7月份生产了一种新型玩具，打算在年底推出。在9月份，该生产厂家的库存的玩具被人盗窃，并于11月份在市面出售。后有数名儿童因同样症状的疾病被送到医院，经查这些儿童都曾玩过该厂生产的玩具。在经过化验后，有关部门发现该厂的玩具含有对人体有害的物质。在此事件中，受害儿童可以向谁要求赔偿( )

A．玩具的生产厂家

B．盗窃者

C．销售商

D．被保险人所投保的保险公司