CO2在血液中运输的主要方式是A．物理溶解 B．与水结合成碳酸 C．形成氧合血红蛋白

阅读理解。

    Mr Stilwell looked out of his window. There was a boy at the other side of the street. The boy took some

bread out of a bag and began eating it.

    There was a very thin dog in the street too. The boy said to it very kindly. "Come here, good dog. Do you

want a piece of bread?"

    The dog was very hungry and went to the boy, but he didn't give it any of his bread. Instead, he kicked

(踢) the dog. It ran away and the boy laughed.

    Then Mr Stilwell came out of his house and said to the boy, "Do you want a shilling?"

    The boy was happy and said, "Yes, I do."

    "Come here," Mr Stilwell said. The boy went to Mr Stilwell, but Mr Stilwell didn't give him a shilling.

Instead, he hit him with a stick.

    The boy cried and said, "Why did you hit me? I didn' t ask you for any money."

    "No," Mr Stilwell said, "and the dog didn' t ask you for any bread, but you kicked it."

1. Mr Stilwell stood ______ and looked out. [ ]

A. before the window

B. in the street

C. on his house

D. at the table

2. The thin dog was ______. [ ]

A. Mr Stilwell's

B. the boy's

C. Mr Stilwell's neighbour's

D. a wild one

3. The boy was Mr Stilwell's son, wasn't he? [ ]

A. Yes, he was.

B. No, he wasn't.

C. Yes, he wasn't.

D. No, he was.

4. The boy ______. [ ]

A. kicked the dog, then gave bread to it

B. gave the dog bread, then kicked it away

C. kicked the dog, then laughed at it

D. was kind to the dog to give it bread

5. From this story, we can see that ______. [ ]

A. the boy was bad

B. Mr Stilwell was bad

C. the people in West countries liked the dogs

D. the people in West countries didn' t like the dogs

需求的外部效应是当前零售物业理论中的研究热点，下列说法正确的是（）。

A.与互相促进销售的聚集效益不同，需求的外部效应流是单方向的，即从主力店流向普通商店，而不是相反

B.在租户的组合上，要限制普通零售店的入住，因为它会影响由主力店提升的零售商业物业的形象

C.主力店产生了需求的外部效应，为周围小的零售店带来了客流

D.零售商业物业的一个重要特征就是价格歧视，即主力店通常能够得到租金优惠

E.消费者往往会通过主力店来判断整个零售商业物业的形象，因此邀请若干主力店入住将会大大地提高零售商业物业的形象

我国现行的税率主要有( )。

A．浮动税率

B．定额税率

C．超额累进税率

D．超率累进税率

固定资产日常修理支出应当计入当期损益，而固定资产改扩建等改良支出则应计入相应固定资产的取得成本。 ( )

某飞机固定式灭火系统由电动爆炸帽释放的灭火瓶瓶口由铜膜片密封，当操纵灭火开关时，电流流过电阻丝而发热：（）.

A.使传爆管内火药燃烧，推动针杆活塞刺破密封膜片而释放灭火剂

B.熔化瓶口密封膜片而释放灭火剂

C.加热瓶口内的空气，气体膨胀推动针杆活塞刺破密封膜片而释放灭火剂

D.使瓶口密封膜片软化，瓶内压力冲破膜片而释放灭火剂