问题 选择题

下列有关人类消化作用的叙述,正确的是(  )

A.胃液和小肠液都参与牛奶的消化

B.胃初步消化食物,不吸收任何养分

C.大肠壁的粘膜有很多皱襞及绒毛

D.胆汁将脂肪分解成为脂肪酸和甘油

答案

A、胃液中含有胃蛋白酶、小肠液中含有肠蛋白酶,而牛奶的主要成分是蛋白质,因此胃液和小肠液都参与牛奶的消化.故符合题意.

B、胃能初步消化蛋白质,还能吸收少量的水、无机盐和酒精,故不符合题意.

C、小肠壁的粘膜有很多皱襞及绒毛,扩大了消化吸收的面积,而大肠有皱襞,没有绒毛,故不符合题意.

D、胆汁内不含有任何消化消化酶,胆汁对脂肪有乳化作用,属于物理消化.肠液、胰液将脂肪分解成为脂肪酸和甘油,故不符合题意.

故选:A.

阅读理解

B

Wild Blue is a none-of-a-kind, geography-oriented exploration and adventure center for children aged 3 through 10.Our mission is to immerse(使沉浸于)children and their families in experiences that relate to the people,places and natural elements of the wonderful planet we live on.All our programs are developed and led by our own world-class team of explorers and educators.The following is a brief introduction to some of our classes:   

Global Kitchen

All over the world,people gather together to share meals.In this class, children will learn about the cuisine of a foreign country or region while they create a delicious snack. Recipes will be kid-friendly, and use ingredients(原料)from the country of origin.Your child will learn healthy,easy-to-create recipes he can bring home to share!

Documentary Filmmaking

This 50-minute video documentary film class is specially designed for our 6and 7 years old explorers.Classes will concentrate on the basics of visual storytelling and include subject discovery, story development, storyboard, filming,editing and presenting.Participants will work as a team to produce their own documentary, which will then be screened for friends and family at the course’s conclusion.

Exploring the Wonders of Earth

Designed specifically with our youngest explorers in mind, this semester-long program will expose your child to a wide variety of exciting scientific events that occur on our planet,from chocolate melting,to volcanoes erupting,to seeds sprouting.Through this course children will begin to develop an awareness of the science that makes the earth a marvelous place.

A World of Arts and Crafts

Whether you are seeking to simply extend your child’s time at Wild Blue or looking for a favorite pastime,we offer our own unique version of arts and crafts.Focusing on using found objects,this course encourages children to draw creative inspiration from cultures around the world.This course is available,upon request, as an additional class in your child’s schedule.

55. The passage is mainly about ______.

A. an interesting exploration to the outer space

B. various tips on how to explore

C. an exploration program designed for children

D. a vivid description to an exploring experience

56. In the “Global Kitchen” class, children will _____.

A. learn to create a delicious snack of his own country or region

B. focus on learning complex recipes

C. enjoy the food over the process of making

D. mainly use ingredients that are unpolluted and good to children’s health

57. Those who sign up for thedocumentary filmmaking class     .

A. should be children with advanced filmmaking ability

B. can do filmmaking with his partner as wellas his families

C. can work both individually or as a pair

D. will present their works in the end

58. If one parent intends to develop his child’s love for science, which course can he take?

A. Global Kitchen                      B. Documentary Filmmaking

C. Exploring the Wonders of Earth D. A World of Arts and Crafts

判断题