题干

血液是反映人体健康状况的“晴雨表”,通过对血液成分的分析,可以了解身体的许多生理状况.如图是小明检查时的血涂片和化验单,有关说法正确的是(  )

医院检验科报告单(部分)

化验项目

测定值

正常参考值

RBC (红细胞)

3.8×1012个/L

(4.0~5.5)×1012个/L

WBC (白细胞)

6.8×109个/L

(4.0~10)×109个/L

Hb (血红蛋白)

85g/L

120~160g/L

PLT (血小板)

210×109个/L

(100~300)×109个/L

A:血液由图中的①②③组成

B:图中②能能吞噬病菌,属于人体的第一道防线

C:图中③有细胞核,能促进止血和加速凝血

D:根据小明的化验结果,医生建议他多吃一些含铁和蛋白质丰富的食物

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答案(点此获取答案解析)

D

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    A friend of mine named Paul received an expensive car from his brother as a Christmas present. On Christmas Eve when Paul came out of his office, a street urchin (顽童) was walking around the shining car. “Is this your car, Paul?” he asked.

    Paul answered, “Yes, my brother gave it to me for Christmas.” The boy was surprised. "You mean your brother gave it to you and it cost you nothing? Boy, I wish…"He hesitated.

    Of course Paul knew what he was going to wish for. He wished he had a brother like that. But what the boy said surprised Paul greatly.

    “I wish,” the boy went on, “that I could be a brother like that.” Paul looked at the boy in surprise, and then he said again, “Would you like to take a ride in my car?” “Oh yes, I'd love that.”

    After a short ride, the boy turned and with his eyes shining, said. “Paul, would you mind driving in front of my house?”

    Paul smiled a little. He thought he knew what the boy wanted. He wanted to show his neighbors that he could ride home in a big car. But Paul was wrong again. “Will you stop where those two steps are?” the boy asked.

    He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast.

    He was carrying his little. crippled (残疾) brother. He sat him down on the step and pointed to the car.

    “There he is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn't cost him a cent. And some day I'm going to give you one just like it… Then you can see for yourself all the nice things in the Christmas window that I've been trying to tell you about.”

    Paul got out and lifted the boy to the front seat of his cat. The shining-eyed elder brother climbed in and three of them began an unforgettable holiday ride.