在反复荷载作用下的结构构件，钢材往往在应力远小于抗拉强度时发生断裂，这种现象称为钢材

V. 短文填词（共10小题；每小题1分，满分10分）

Do you like friends who can teach you a lot every day?         

Books are s______ friends because they bring knowledge to us     91.___________

and keep us company through our ______ (人生）. They are         92.___________

so valuable that ________ (图书馆) are built to keep them.            93.___________

A_____ all great men are lovers of books. Franklin said that it        94.___________

was books that led him to success and that he could have  

a______(获得) nothing without books. Books are the holders of          95.___________

mankind’s _______(经验) and imagination. They enable us to see       96.___________

through the past and predict the ______. So when you open a       97.___________

book, you would get into a world ______ you have never been         98.___________

before. A good book is a good teacher that h______  you to get over 99.___________

difficulties. No matter what you are, _______or old, poor or rich,        100.___________

books are your devoted friends.    

海南岛动植物种类繁多，而沙漠地区则少。形成这一现象的主要原因是

A．阳光

B．温度

C．水

D．空气

氧化还原反应实际上包含氧化和还原两个过程。（1）向氯酸钠的酸性水溶液中通入二氧化硫，该反应中氧化过程的反应式为：SO₂+2H₂O – 2e^-→ SO₄^2- + 4H⁺; （2）向亚氯酸钠(NaClO₂)固体中通入用空气稀释的氯 气，该反应中还原过程的反应式为：Cl₂ + 2e^-→ 2Cl^-。在（1）和（2）反应中均会生成产物X，则X的化学式为（    )

A．NaClO

B．NaClO₄

C．HClO

D．ClO₂

为体现公平、平等原则，写字楼对具备支付能力的承租人都持欢迎态度。()

依次填入下列各句横线处的词语，最恰当的一组是（）。①胡 * * * * 虽然60多岁了，但看上去，人们还是觉得他很_______，很潇洒，很有风度。②《水浒传》里的李逵真是个大大咧咧的人，干什么事情都似乎不太_______，还乐呵呵的。③写作文的时候，我们不能_______词语，一定要精心地推敲、琢磨，筛选出最恰当的写入作文，使文章在词语方面就能吸引老师的眼球。

A.年轻、经心、乱用

B.年青、经心、滥用

C.年轻、精心、滥用

D.年青、精心、乱用