单项选择题 农民利用宅基地建设的住房登记，收取房屋权属证书工本费（ ）元。A.0B.10C.40###S

未知题型 下列杂质属信号杂质的是( ) A．氯化物 B．氰化物 C．重金属 D．硫酸盐 E．铁盐

未知题型 The Internet has become a commonplace for us. While【C1】______the Internet, we should not【C2】______the alarm bells sounding in our ears, reminding us of keeping【C3】______for on-line crimes. Last year, the Melissa and Explore Zip virus caused chaos【C4】______the Internet. Last week the 'I love you' bug played havoc【C5】______the world. What will be the next? No one knows. Many on-line crimes are not so different to【C6】______seen in real world, the spreading of fake data, cheating and blackmail,【C7】______property rights infringements and privacy violations. But computer hackers also create new forms of crime【C8】______the Internet changes the world into a 'global village'. With the【C9】______of e-business, on-line crimes could not only cause great damage to【C10】______, but could also threaten the【C11】______of national political, economic and cultural orders. The【C12】______legal system in most countries【C13】______weak when dealing with on-line crimes,【C14】______to the sophisticated technology involved. For this reason, many countries are considering【C15】______Internet laws to curb on-line crimes. In China,【C16】______there are millions of Internet surfers, it is more important to formulate new laws and rules on network security than to【C17】______the existing ones. When drafting and【C18】______new laws, China should also【C19】______the relations between protecting network security【C20】______the sound development of Internet.【C1】A．surfingB．operatingC．reachingD．exploring