网上心理测验
采用Item Response Theory（IRT）技术，进行Computerized Adaptive Testing（CAT）方式的中文网络心理测验。
Flashcards
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E-Cards
hundreds of photos and animations to choose from for online greetings. Great cards for birthdays and other special occasions. Every card you send helps support nature and the environment.
Regards.com
The web's largest collection of free greeting cards including free birthday ecards, animated e-cards, and free holiday ecards.
Hallmark Cards
Send e-cards, personalized cards, photo cards, cards with sound, invitations and announcements for birthdays and more. See special offers and the latest cards, gifts, wrap and ornaments at Hallmark stores.
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