下列叙述中与地球上具有有利于生命存在的温度条件无直接关系的是 A.地球与太阳的距

题型:选择题

问题:

下列叙述中与地球上具有有利于生命存在的温度条件无直接关系的是

A.地球与太阳的距离

B.地球的体积质量适中

C.地球上具有大气

D.地球的自转和公转周期适中

考点:地球的特殊性——存在生命的行星地球的普通性
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短文填空

     My father brought home a sailboat when I was ten, and almost each Sunday in summers we would go

sailing. Dad was quite skilled in sailing, but not good at   1  . As for me, I learned both before twelve

because of living close to Lake Ontario.

     The last time Dad and I set sail together was really unforgettable. It was a perfect weekend after I

graduated from university. I came home and invited Dad to go sailing. Out we set soon on the calm lake.

Dad hadn't   2   for years, but everything   3   well with the tiller(舵柄)in his hands.

     When we were in the middle of the lake, a   4   wind came all of a sudden. The boat was hit violently. Dad was always at his best in any danger,   5   at this moment he froze.

     "John!    6 !" he shouted in a trembling voice, with the tiller still in his hands.

     In my memory he could fix any   7  . He was the one I always    8  to for strength and security.

Before I could respond, a wave of water got into the boat. I rushed to the tiller but it was too late. Another huge wall of water turned   9   the boat in a minute. We were thrown into the water, and Dad was

struggling aimlessly. At that moment, I felt fiercely protective of him.

     I swam to Dad quickly and assisted him in climbing onto the hull(船壳)of the boat. Upon sitting on the hull, Dad was a little awkward about his flash of.   10  "It's all right, Dad. We are safe now," I comforted him.

     That was the first time Dad had counted on me in a moment of emergency. More importantly, I found it was my turn to start looking out for my father.

题型:选择题

I have bought a good book, _____ that will surely interest _____ of the students. [ ]

A. one; everyone

B. the one; everyone

C. one; every one

D. the one; every one

题型:选择题

队列是限定在表的一端进行插入和在另一端进行删除操作的线性表。允许插入的一端称作______。

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李教授说,矿泉水比纯净水含有更多的矿物质。所以,经常饮用矿泉水的人会增加患肾结石的危险,因为矿物质会在肾脏里沉淀。 以下哪项最能削弱李教授的论证( )

A.有些矿物质也是人体所必需的

B.形成肾结石的只是某些种类的矿物质

C.矿物质在肾脏里沉淀的原因是肾功能出现了问题

D.在平常的饭菜里也含有矿物质

题型:选择题

为了保证车辆安全会车和交通畅通,会车时要减速、鸣叫、靠右行。

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