李智以每分钟62.8m的速度绕一个圆形体育场步行一周,恰好用去10分钟. (1)

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问题:

李智以每分钟62.8m的速度绕一个圆形体育场步行一周,恰好用去10分钟.

(1)这个体育场的面积是多少平方米?

(2)在体育场的四周每隔1.57米栽一棵小树,一共可以栽多少棵?

考点:圆的周长圆的面积植树问题
题型:解答题

患儿,女,10个月,因面色苍白2个月来医院就诊。患儿生后单纯母乳喂养,未添加辅食。查体:精神萎靡,营养发育较差,反应迟钝,皮肤黏膜和甲床苍白,头发枯黄,前囟2cm×3cm,心肺无异常,肝肋下2cm,脾肋下1.5cm。血红蛋白70g/L,血涂片见红细胞体积小、含色素低。

该患儿正确的诊断是()。

A.生理性贫血

B.地中海贫血

C.营养性缺铁性贫血

D.营养性巨幼红细胞性贫血

E.感染性贫血

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“感觉到了的东西,我们不能立刻理解它,只有理解了的东西,才能更深刻地感觉它”,这句话表明______。

A.人的感性认识是整个认识的起点

B.感性认识的局限性

C.感性认识对人认识事物本质没有实际意义

D.感性认识是认识的初级阶段,理性认识是认识的高级阶段

题型:解答题

建筑物(地上部分)垂直运输以建筑物檐高套用定额,同一建筑物檐高不同时,应根据不同檐高的( )分别计算建筑面积,套用相应定额。建筑物层高超过3.6m时,按每增加1m相应定额(按比例)计算。

A.垂直分界面

B.水平分界面

C.垂直投影面

D.水平投影面

题型:解答题

阅读下面短文,从短文后各题所给的四个选项(A、B、C 和 D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

                                    A Heroic Driver

Larry works with Transport Drivers. Inc. One morning in 2009. Larry was  41

along 165 north after delivering to one of his    42   . suddenly, he saw a car with its bright lights on.    43    he got closer, he found 44    vehicle upside down on the road. One more look and he noticed    45    shooting out from under the    46    vehicle. Larry pulled over, set the brake and    47   the fire extinguisher (灭火器). Two good bursts from the extinguisher and the fire was put out.

The man who had his bright lights on    48    and told Larry he had    49    an emergency call. They    50    heard a woman’s voice coming from the wrecked (毁坏的) vehicle.    51   the vehicle, they saw that a woman was trying to get out of the broken window. They told her to stay    52    until the emergency personnel arrived,    53    she thought the car was going to    54   . Larry told her that he had already put out the fire and she should not move    55    she injured her neck.

Once fire and emergency people arrive, Larry and the other man    56    and let them go to work. Then, Larry asked the    57    if he was needed or    58    to go. They let him and the other man go.

One thing is    59   —Larry went above and beyond the call of duty by getting so close to the burning vehicle! His    60    most likely saved the woman’s life.

52()

A.quiet

B.still

C.away

D.calm

题型:解答题

试述急性盆腔炎的诊断标准。

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