题干

如图所示是人体结构层次示意图.有关叙述中,错误的是(  )

A:①是胃,能蠕动主要是构成其的④具有收缩和舒张的功能

B:②是由许多形态相似,结构、功能相同的细胞联合在一起形成的

C:③是消化系统,其中最大的消化腺是肝脏,其分泌的胆汁不参与消化

D:按照构成生物体的结构层次是④→②→①→③→⑤

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答案(点此获取答案解析)

C

同类题2

短文续写

    Dad pushed his finger into my basket. “What's that?”he asked. “Mew, ”said the basket.

    Dad suddenly pulled his hand away. “Oh no,” he said. “Not a cat. No way. ”

    I pulled Checkers from the basket. “It's not a cat. It's a kitten. Can I keep him? Please?”

    Dad frowned for a minute, thinking. Then he rubbed Checkers under the chin(下巴). “You'll have to take good care of him. ”

    I hugged Checkers. “I will, “I promised, he won't be any trouble at all.” And Checkers wasn't—until he grew into a cat. He wanted to be the first one in the house- and the first one out of the house. Sometimes he blocked dad in the way. “That cat!”Dad complained. Checkers climbed onto our roof. He had no trouble getting down. Usually he aimed for Dad. “That cat!” Dad yelled. Checkers flushed the toilet and watched the water circle away. “That cat!”Dad was almost mad. Checkers hid in strange places. He liked to surprise people.

    One day he hid under the couch(睡椅). Dad walked by with a glass of orange juice. Checkers jumped out. He curled around Dad's ankle and attacked Dad's toes. Orange juice spilt all over the floor. Dad yelled and put Checkers outside. “Get out of my way, cat!” he said angrily. And he slammed the door.

    Dad washed the injured toes and peeled open a bandage. He wrapped it around his big toe, and then he opened four more for his ankle.

    I watched from the window. Checkers looked frustrated as he walked down the road.

    “I'm sorry Checkers scratched you, ”I said. “He was just playing. He didn't mean to hurt you.”

    “Don't worry, ”said Dad. “That cat will be back. ”

    After supper I called for Checkers. But Checkers didn't come. Nighttime came. I called and called. I knocked his food dish with a spoon loudly. But still no Checkers. I left the porch light on. But the next morning Checkers still wasn't there.

    I carried a picture of Checkers to all the neighbors. I drew posters and hung them all over. But nobody found Checkers.

    Days went by. Life wasn't the same without that cat. I was angry with Dad. I didn't think he missed Checkers at all.

    Then one night the phone rang.



    Dad nodded, his face turning red.

注意:1.所续写的短文词数应为150左右;2.应使用5个以上短文中标有下划线的关键词语;3.续写部分分为二段,每段的开头语已经为你写好;4.续写完成后,请用下划线标出你所使用的关键词语。