问题 实验题

每年农历的正月十五日,是我国的传统节日——元宵节。民间过元宵节有吃元宵(汤圆)的习俗,元宵由糯米制作,或实心,或带馅。糯米的主要成分如下表:

营养

成分

糖类

(g)

蛋白质

(g)

脂肪

(g)

维生素

(g)

矿质元素(mg)
每100g

含量

72.412.70.90.6210.2
⑴糯米中富含糖类、蛋白质等营养物质,这些物质主要储存在水稻种子的_________中。

⑵在消化腺中,                        分泌的消化液,都可以对脂肪进行消化。

⑶蛋白质是构成细胞必不可少的成分,在消化道内蛋白质最终被消化成氨基酸,它们能被小肠绒毛吸收进入到绒毛的____________。

⑷某同学由于偏食而出现皮肤干燥、夜晚看不清东西等症状。患这种病主要是由于摄入的食物中缺乏         引起的。

答案

⑴胚乳  ⑵肝脏、肠腺、胰腺(答全给2分,答出两个给1分,答出一个或没答给0分,)

⑶毛细血管     ⑷维生素A

题目分析:(1)水稻属于单子叶植物,营养物质主要储存在胚乳中。

唾液里面含有唾液淀粉酶,能对糖类进行初步的化学性消化,将糖类初步消化成麦芽糖。胃液里面含有胃蛋白酶,能对蛋白质进行化学性消化,对脂肪和糖类不能消化。肠液里面含有胰腺、肠腺等分泌的多种消化液,能对糖类和蛋白质、脂肪进行化学性消化;胰腺分泌的消化液含多种消化酶,能对糖类和蛋白质、脂肪进行化学性消化。胆汁是由肝脏分泌的,里面不含消化酶,但能够乳化脂肪,将较大的脂肪颗粒乳化为脂肪微粒,增大与消化酶的接触面积,对脂肪进行物理性消化,所以肝脏、肠腺、胰腺分泌的消化液都可以对脂肪进行消化。

蛋白质进入消化道以后,能在胃和小肠中被消化,胃对它只是进行初步消化,在小肠中蛋白质被彻底消化为可以吸收的氨基酸,它们能被小肠绒毛吸收进入到小肠绒毛内的毛细血管的血液中。

(4)夜晚看不清东西是夜盲症的症状,皮肤干燥和夜盲症是由于体内缺乏维生素A造成的。

阅读理解

 

Jeremy Shu -How Lin is an NBA player on the New York Knicks. He is an Asian-American NBA rising star. He was born on August 23rd, 1988. He is 1.91meters tall. He weighs 91 kilos. He is also a graduate of Harvard University. Months ago, few people knew of him, but in February, 2012, Lin started to shine. He led his team to a series of (一系列)wins. He surprised everybody and quickly became famous in the sports world.

US Education Secretary Arne Duncan wrote an article about Lin for Time. He said Lin breaks lots of wrong ideas. One of them is that Asian Americans can’t play basketball well. Another is that you can’t be a great sports player and an excellent student at the same time.

Duncan also noted that Lin’s success was not an accident(偶然). He worked hard and stayed humble(谦虚的). He lives the right way. He plays the right way.

What makes Lin stand out from other players is his hard work and never-give-up spirit.

小题1: Which team does Jeremy Shu-How Lin play for?

A.The Houston Rockets.

B.The Los Angeles Lakers.

C.The New York Knicks.

D.The New Jersey Nets.小题2:. How old is Jeremy Shu-How Lin this year?

A.He is twenty.

B.He is twenty-two.

C.He is twenty-four.

D.He is twenty-six.小题3: Which university did he graduate from?

A.Taiwan University.

B.Harvard University.

C.Oxford University.

D.Cambridge University.小题4:. According to the passage, do you think a person can be a great sports player and a good student at the same time?

A.Yes, I think so.

B.No, I don’t think so.

C.Yes, I don’t think so.

D.No, I think so.小题5:What makes him a great success?

A.Hard work and his height.

B.His coach and his weight.

C.His character(性格) and his family.

D.Hard work and never-give-up spirit.

单项选择题