If you're looking for information you can trust about kids and teens，you've come to the right place. KidsHealth is the most-visited website for information about health，behavior, and development from before birth through the teen years.
On a typical weekday，KidsHealth gets as many as a million visits. One of the things that make KidsHealth special is that it's really four sites in one: with sections for parents.for kids，for teens，and for educators.
KidsHealth is more than just the facts about health. It also provides families with advice about a wide range of problems that affect children and teens.
To do this，our editorial staff always communicates complex medical information in language that readers can understand and use. And all KidsHealth articles，games，and other content go through a rigorous medical review by medical experts to ensure that the information is as reliable and up-to-date as possible.
Along the way, KidsHealth has received its share of recognition, including four Webby Awards(Best Family/Parenting Site and Best Health Site on the Web)，the Parent's Choice Gold Award, the Teacher's Choice
Award for Family, and the International Pirelli Award for best educational media for students.
KidsHealth cannot ta ke the place of an in-person visit with a doctor, who can perform examinations and answer questions. But we work with foundations and other groups that support our goal:helping with the healthy growth of families. They help to fund additional Kidsl lealth ed ucational programs and inspire families to make the best choices possible. We welcome you to join us in supporting families.
We depend on our millions of visitors to let us know their thoughts about KidsHealth, how we've been helpful，and ways we can improve the site. If you have a correction to request，please send that along, too. I guarantee we'll listen.
28. What's the text mainly intended for?
A. Introducing a website. B. Advertising for visitors.
C. Appealing for sponsorship. D. Drawing attention to kids' health.
29. Which of the following words can replace the underlined word "rigorous" in Paragraph 3?
A. Unnecessary. B. Strict. C. Casual. D. Potential.
30. What does Paragraph 4 mainly‘ talk about?
A. The huge reliability of KidsHealth. B. The wide popularity of KidsHealth.
C. The educational role of KidsHealth. D. The great achievements of KidsHealth.
31. What can we know about KidsHealth from the text?
A. It is not. intended for adults.
B. It shows only health-related facts.
C. It aims at helping families grow up healthily.
D. Its contents are sometimes difficult to understand.