按发展水平，跟中国一样的国家是

    Are you looking for some new and exciting places to take your kids to? Try some of these places:

    Visit art museums. They offer a variety of activities to excite your kids'interest. Many offer workshops for making hand-made pieces, traveling exhibits, book signings(签名）by children's favorite writers, and even musical performances and other arts.

    Head to a natural history museum. This is where kids can discover the past from dinosaur models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.

    Go to a Youtheater. Look for one in your area offering plays for children and family visitors. Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts. PuPPet (木 偶）making and stage make-up are just a couple of the special offerings you might find.

    Try hands-on science. Visit one of the many hands-on science museums around the Country • those science play-lands are great fun for kids and grown-ups alike. They will keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.

有一个小灯泡，铭牌上标有“6V 3W”．求：

（1）小灯泡正常工作10分钟将消耗多少焦耳电能？

（2）将这个小灯泡和一个电阻连接后，接在9V的电源两端，要使小灯泡恰好正常发光．试画出该电路图，并求出这个电阻的阻值是多少？

南京市因为缺乏专业的保姆就业市场，供求双方的信息不能直接对接，而且要通过劳务中介这个中间环节转接，使得保姆找雇主难，而雇主找保姆更难。这要求政府(     )       

【环境保护】根据材料，回答问题。

下图为2000年中国南北方城市生活垃圾的成分构成。读图回答下列问题。