题干

新生儿小肠上皮细胞通过消耗ATP,可以直接吸收母乳中免疫球蛋白、半乳糖和葡萄糖等。母乳中的营养蛋白可以被消化吸收。免疫球蛋白在新生儿消化道中不能被分解的原因及被吸收到血液中的方式可能是

A:新生儿的消化系统发育不完全,无消化蛋白质的能力;胞吞方式吸收

B:母乳中含有抑制免疫球蛋白分解的某些物质;胞吞方式吸收

C:新生儿的消化系统中含有抑制蛋白质分解的某种物质;主动运输方式吸收

D:母乳中含有一定量的ATP,可为新生儿提供物质吸收的能量;胞吞方式吸收

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B

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    Founded in 1764 by French traders, St. Louis today is the fifteenth largest urban area in the United States. There are many attractive destinations for tourists.

American Kennel Club Museum of the Dog

    Dog lovers who visit St. Louis won't want to miss this 14,000-square-foot museum. Inside are over 500 paintings, prints, watercolors, and a variety of other dog art objects.

    The Museum is open year round, Tuesday through Saturday 10 AM to 4 PM, and Sunday 1 PM to 5 PM. Admission is $ 5 for adults, $ 2.50 for seniors, and $1 for children up to 14.

Anheuser Busch Brewery

    The Anheuser Buxch Brewery tour is not just for beer lovers. The tour includes the historic Brew House. Then the tour continues to the modern Bevo Packaging Plant. The best will be the Budweiser Clydesdale stables. The tours are always free.

Gateway Arch

    Designed by Eero Sarinen and Hannskari Bandel, it took over two years and 900 tons of stainless steel to build. It is the tallest of the country's National Monuments. The Arch is part of the Jefferson National Expansion Memorial. About one milion people per year come to the top of the Arch, where there is an observation platform providing a great view of the city.

St. Louis Zoo

    First version of the St. Louis Zoo opened in 1904 at the St. Louis World's Fair, but in the century since it has grown into one of the chief zoos in the world. The passenger train takes visitors around the Zoo, which contains over 9,000 animals of over 800 species.

    The Zoo is open every day but Christmas and New Year, with summer hours of 8 AM to 7 PM, and hours the rest of the year of 9 AM to 5 PM. Admission to the Zoo is free.