问题 选择题

下列现象主要由地球自转产生的是

A.春、夏、秋、冬四季的变化

B.夏季日出时间比冬季早

C.山东的学生通常比新疆的学生上课时间早

D.地球上五带的形成

答案

答案:C

题目分析:地球自转产生的地理现象有昼夜交替、时刻的早迟,地球公转产生的地理现象有昼夜长短及变化、正午太阳高度的变化与影子。

点评:本题还可以考查自转、公转的基本知识。北半球的春季是3~5月,夏季是6~8月,秋季是9~11月,冬季是12~2月。南半球月份不变,季节相反。地球上的五带。

阅读理解

第三部分:闽读理解(共20小题;每小题2分,满分40分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

A

Prana, our beautiful golden retriever (金毛猎犬) whose name means "breath of life", isn't with us any more. She died of cancer several years ago. But, while sharing our home, she brought such joy and love into our lives that we still miss her.

There are so many wonderful stories about the love in this dog, but my favorite is the one that created an indelible image of how to graciously give what is needed without reserve (储备).

It was an autumn day in Minnesota. But the weather didn' t seem to know the difference between fall and winter. Unexpectedly, we were hit with a big snow fall, for which no one was prepared.

We have two apple trees in our backyard Prana loved apples. When she went outside, she'd grab an apple, stick it far back in her mouth, and sneak it into the house to save for enjoyment later. The apples had been on the ground and were often muddy so I wasn't always happy that Prana had brought them into the house. Sensing my disapproval, she would turn her head so I wouldn't see her hidden treasure. It was our little game.

On the day that it snowed too early in the season, Prana went outside and I watched her from the window. I noticed that she was crazily digging holes and bringing the apples to the surface so they could be seen above the snow. I wondered why she was doing this. She seemed to be entirely busy digging up as many apples as possible during her yard time.

When I called her back into the house, she had her usual one apple in her mouth. About five minutes later, I looked outside ---- the yard was completely covered with birds. Prana had dug up all those apples for her bird and squirrel friends to eat. She knew that they wouldn't have stored enough food to survive such an early winter!

Tears sprung to my eyes as I witnessed this beautiful act of unconditional love from an animal who taught us how to serve life with such grace.

56. We still miss Prana because______.

A. she liked playing with the birds      

B. she always brought apples into the house

C. she made our lives enjoyable and full of love 

D. she dug up apples for her bird friends

57. The underlined word indelible in Paragraph 2 means______.

A. unimportant      B. unbelievable     C. impossible        D. unforgettable

58. Prana dug up as many apples from the snow as possible so that______.

A. she could help her owner store away many apples

B. her bird and squirrel friends could have food in cold weather

C. she could have fun in her yard time

D. she could have something to play with in the house

59. I was deeply moved by Prana because______.

A. she gave what is needed with grace

B. she dug up so many apples in such cold winter

C she gave unconditional love to me with such grace

D. she tried her best to save the birds from the snow

填空题

A、B、C、D、E、F为原子序数依次增大的短周期元素,B、C相邻且同周期,A、D同主族。A、C能形成两种化合物甲和乙,原子个数比分别为2∶1和1∶1,甲为常见的溶剂。E是地壳中含量最多的金属元素。F元素为同周期电负性最大的元素。D和F可形成化合物丙,E和F可形成化合物丁。G为第四周期未成对电子数最多的元素

请回答下列问题:

(1)写出G基态原子的外围电子排布式                           

(2)B和C比较,第一电离能较大的元素是     (填元素符号),其原因为         

(3)甲、乙两分子中含有非极性共价键的是          (填分子式)。

(4)已知化合物丁熔点190℃,沸点183℃,结构如图所示。

①丙和丁比较,熔点较低的化合物是                (填化学式),其原因为                                    

②则丁晶体中含有的作用力有            (填序号)。

A.离子键    B.共价键    C.金属键    D.配位键    E.范德华力

(5)G3+与元素A、C、F构成配合物戊,在含有0.001mol戊的溶液中加入过量AgNO3溶液,经过滤、洗涤、干燥后,得到287mg白色沉淀。已知该配合物的配位数为6,则戊的化学式为                    

(6)三聚氰胺(结构如图)由于其含氮量高被不法奶农添加到牛奶中来“提高”蛋白质的含量,造成全国许多婴幼儿因食用这种奶粉而患肾结石。三聚氰胺中N原子的杂化形式是