构筑物
下列几何图形对幼儿来说最易辨别的是（）。 正方形。 三角形。 梯形。 圆形。
社会资本再生产的核心问题是（） 社会生产两大部类的划分问题。 社会总产品的价值构成问题。 生产资料生产优先增长问题。 社会总产品的实现问题。
蔬菜和水果是人体获取（）的主要来源。 蛋白质。 维生素。 糖类。 水。
Melissa Poe
Melissa Poe was 9 years old when she （31） a campaign for a cleaner environment by writing a letter to the then President Bush. Through her own efforts， her letter was reproduced on over 250 donated billboards （广告牌） （32） the country.
The response to her plea help was so （33） that Poe established Kids For A Cleaner Environment（Kids F.A.C.E.）in 1989. There are now 300，000 （34） of Kids F.A.C. E. worldwide and is the worlds largest youth environmental organization.
Poe has also petitioned the National Park Service to （35） a "Children's Forest" project in every national park. In 1992， she was invited as one of only six children in the world to speak at the Earth Summit in Brazil as part of the Voices of the Future Program. In 1993， she was given a Caring Award for her （36） by the Caring Institute.
Since the organization started， Kids F. A. C. B. members have distributed and planted over 1 million， trees! Ongoing tree-planting projects include the （37） of Kid's Yards-backyard wildlife habitats（栖息地） -and Kid F.A. C. E. is involved in the exciting Earth Odyssey， which is a great way to start helping.
"Starting the club （38） out to be a way to help people get involved with the environment -club members started doing things like recycling， picking up litter and planting trees as well as inviting other kids to join their club."
"We try to tell kids that it's not OK to be lazy，" she explains."You need to start being a responsible， environmentally （39）person now， right away， （40）you become a resource-sucking adult.”
33.（） creation。 across。 implement。 before。 members。 began。 turned。 purpose。 overwhelming。 efforts。 friendly。 professional。
罗马教会在中世纪的进步意义体现在（）。
