问题 选择题

有吸收功能而没有消化功能的结构是(  )

A.食道

B.胃

C.小肠

D.大肠

答案

口腔中含有唾液,能够初步消化淀粉,但口腔对营养物质没有吸收能力;咽和食道是食物的通道,既没有消化能力、也没有吸收能力;胃中含有的胃液能够初步消化蛋白质,胃也能够吸收少量的水、无机盐和酒精;小肠是消化食物和吸收营养物质的主要器官,淀粉、蛋白质和脂肪等大分子的营养物质都在小肠里被彻底消化,小肠能够吸收大部分的水、无机盐、维生素和全部的氨基酸、葡萄糖、甘油和脂肪酸;大肠对食物没有消化能力,但能够吸收少量的水、无机盐和维生素.

故选:D

阅读理解

Mr Brown was going away for a week. Before he left, he said to his son, "if anyone asks for me, you can tell him that your father has been out for doing something, and will be back in a week, then be sure to ask him to sit down for a cup of tea."

"OK, Dad," said his son. But he was afraid his son couldn’t remember this, he wrote these words down on a piece of paper and gave it to him. His son put it into his small pocket, took it out and looked at it every now and then.

Four days passed, but no one came to see his father. The boy thought that there was no man to come and that the piece of paper was of no more use for him, so he burnt it that evening.

The next afternoon, someone knocked at the door. The boy opened it. A man was standing at the door and said, "Where is your father?" The boy put his hand into his pocket at once and looked for the piece of paper. He could not find it. He suddenly remembered he had burnt it, so he shouted, "No more."

The man was very surprised. He asked, "No more? I met your father last week. When did it happen?"

"Burnt yesterday evening."

小题1: A man came to visit the boy’s father on ________.

A.the second day

B.the third day

C.the fourth day

D.the fifth day小题2:The man was very surprised because _________.

A.he thought the child’s father was dead

B.the child didn’t ask him to sit down

C.the child gave him a cup of tea

D.he couldn’t find that piece of paper小题3: What was burnt? ___________.

A.The piece of paper

B.Mr Smith

C.The visitor

D.The boy

单项选择题