题目

南宋爱国词人辛弃疾在《西江月》中写到“明月别枝惊鹊，清风半夜鸣蝉。稻花香里说丰年，听取蛙声一片。”请根据你所学的生物学知识完成下列问题：   (1)上述词里描述了几种动物，它们分别属于          、           和         。   (2)“金蝉脱壳”后的蝉处于发育的           阶段。   (3)蝉、青蛙、喜鹊发育的起点都是                  ，其中青蛙在个体发育过程中其幼体            与成蛙在外部形态、内Most parents love the Internet and want their kids to use it. But a new survey in America finds almost as many also fear the online world—especially social networking sites such as My Space—and worry their kids will get in trouble with people they meet. “The parents see the web’s incredible potential(可能性), and they know their kids have to be there.” says James Steyer, CEO of Common Sense Media, which released results from a survey that looked into parental attitudes toward the Internet. “It is also what they are scared of most.” The study was conducted online May 5-10 by Insight Research Group. It says 80% of parents are concerned about kids meeting bad people online. That’s because young people who largely have grown up with the Net think of it as a social outlet(出口), say the researchers. To young people, the benefits of giving out some personal information to reach out to friends outweigh the risks. And the study shows they are so comfortable with the medium that 78% have a personal website or blog. Parents also recognize the importance of the Internet. The survey shows 91% think the Net helps their children explore their passions, and 77% think the Internet is one of the most valuable education tools teens have. But 88% think it’s important to know what their kids are doing online. Findings suggest both parents and teens need more education about using online media, Steyer says. Internet safety has become an increasing concern for parents in America. Organizations like the Non-profit Common Sense have been trying to reach and help parents pay attention to the problem. In the second paragraph, the underlined word “It” refers to_____. A. Common Sense Media                         B. the result of the survey C. the web’s incredible potential                   D. the website called My Space Why do young people give out their personal information? A. They think it has more advantages than disadvantages. B. They want to make themselves famous by doing that. C. They want to have a personal website each. D. They want to get some information from others. Most parents think it is important to know_____. A. where their children give out the information  B. what kind of websites they have C. how often they go online                        D. what their children are doing online From the passage we can infer that_____. A. children are too young to know how to use the Internet B. parents must teach their children how to use the Internet C. parents also need to learn more about using the Internet D. the Internet is the most valuable tool for children to learn