Polar bears live in such environment that is too cold for most animals.  For much of the year, they live and hunt on the ____  (1)  ____ (freeze) Arctic sea ice.  Nature has prepared them for the cold conditions but nothing has prepared them for the danger ____  (2)  ____ threatens (威胁) their only home.

    The polar bears' world is melting.  Polar bears ____  (3)  ____ (suffer) in a warmer world are in danger.  Studies show that the polar ice ____  (4)  ____ (reduce) by 9.8% every 10 years since 1,978. At present, about 20,000 to 25,000 polar bears live in the Arctic.  Polar bears depend on the sea ice for their ____  (5)  ____ (survive).  "The sea ice is more than just the platform that the bears walk ____  (6)  ____," says Andrew Derocher, who studies North American polar bear populations. "Without ____  (7)  ____, they can't exist."

     Some melting and refreezing of the polar ice is natural.  But in a ____  (8)  ____ (warm) world, these cycles speed up, and bears have less time to hunt. ____  (9)  ____ (normal), they have three months in the spring when they gain more weight and the extra fat is used later, ____  (10)  ____ the bears are not actively hunting.  Therefore, it is urgent to protect the environment and maintain the ecological balance.

Online shopping is coming into fashion in most cities, where people are able to make full use of the rapidly-developed internet technology. Nowadays, can we find a person  61  has not experienced online shopping? Definitely not.

Online shopping  62  (welcome) by most people due to various reasons. From the perspective of consumers, it can save some time for people who don’t have much spare time. Just click the mouse, they can get 63  they want while staying at home. For the retailers, it can cut some costs for those who don’t have much circulating funds. 64 (compare) with the traditional trade mode, they don’t have to spend money in renting a house. 65  , there are still some disadvantages on online shopping. First, a face-to-face deal makes online shopping less 66  (rely) and trustworthy. Second, people will lose 67   fun of bargaining.

68  is undeniable  that shopping on the internet has become an irresistible trend in modern society. It’s of great urgency that we need to make the relative laws in accordance 69   the rapid growth of online shopping. Only in this way can we enjoy the pleasure and 70   (convenient) of online shopping without the concern of being cheated.

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

Henry: I heard you've been painting for a long time.

Claire: Yes. Though I'm not a very good painter, I attempt 1. ________ (paint) as well as I can.

Henry: I love painting too. There is an art gallery around the corner. A collection of Canadian arts is on 2. ________ (exhibit) there. Do you feel like going to see it?

Claire: Sure.

Henry: Is 3. ________ okay to look at the works of the Group of Seven first?

Claire: OK. But who or what is the Group of Seven?

Henry: The Group of Seven is a group of seven Canadian painters4. ________ painted Canadian landscapes in the 1920s and 1930s.

Claire: Look at these 5. ________ (wonder) paintings of the outdoors. They must have been painted by the Group of Seven.

Henry: Right. These artists loved to paint the wilderness.

Claire: To tell the truth, I can't stop looking at them.Iwishmypaintings6.________ (be) as good as theirs.

Henry: I believe they will be in the future. It seems 7. ________ you like them very much. Actually, one of their works is in my house.

Claire: 8. ________ did you get it? Did you buy it?

Henry: No. Mr. Smith from Toronto University gave it to me as a present. He had taught there 9. ________ (faith) for 40 years.

Claire: What 10. ________ coincidence! He was also my father's teacher

Henry:I heard youˈve been painting for a long time.

Claire:Yes. Though Iˈm not a very good painter, I attempt 56. ________ (paint) as well as I can.

Henry:I love painting too. There is an art gallery around the corner. A collection of Canadian arts is on 57. ________ (exhibit) there. Do you feel like going to see it?

Claire:Sure.

Henry:Is 58. ________ okay to look at the works of the Group of Seven first?

Claire:OK. But who or what is the Group of Seven?

Henry:The Group of Seven is a group of seven Canadian painters 59. ________ painted Canadian landscapes in the 1920s and 1930s.

Claire:Look at these 60. ________ (wonder) paintings of the outdoors. They must have been painted by the Group of Seven.

Henry:Right. These artists loved to paint the wilderness.

Claire:To tell the truth, I canˈt stop looking at them. I wish my paintings 61. ________ (be) as good as theirs.

Henry:I believe they will be in the future. It seems 62. ________ you like them very much. Actually, one of their works is in my house.

Claire:63. ________ did you get it? Did you buy it?

Henry:No. Mr. Smith from Toronto University gave it to me as a present. He had taught there 64. ________ (faith) for 40 years.

Claire:What 65. ________ coincidence! He was also my fatherˈs teacher.

Born in Amherst, Massachusetts, to asuccessful family, Emily Elizabeth Dickinsonwas an American poet.She studied at MountHolyoke Female Seminary before 56. ________(return) to her familyˈs house inAmherst whereshe lived 57. ________ peaceful life. She kept intouch with her friends by writing lettersand was58. ________ (willing) to greet guests or, later inlife, even leave her room.

Dickinsonˈs poems are unique for the time shelived in; they contain short lines, typically lacktitles, andoften use half rhyme. Many of herpoems deal 59. ________ themes of death andimmortality(永生).Dickinson wrote about 1,800poems during her lifetime, but fewer than a dozenof 60. ________ werepublished. Although most ofher friends probably knew about Dickinsonˈswriting, they didnˈt know 61. ________ she hadproduced so many poems until after her deathin 1886, when her younger sister Laviniadiscovered the place where the poems werehidden. 62. ________ her sister not discoveredthem, thebroadness of Dickinsonˈs workwouldnˈt have become known.

Dickinsonˈs first collection of poetry waspublished in 1890, the content of 63. ________was heavilyedited by the publishers 64. ________(fit) the conventional poetic rules of the time. Acomplete and mostlyunedited collection of herpoetry became available for the first time in1955. Now Dickinson 65. ________ (consider) tobe one of the most important American poets.

Born in Amherst, Massachusetts, to a successful family, Emily Elizabeth Dickinson was an American poet. She studied at Mount Holyoke Female Seminary before 1. ________ (return) to her family's house in Amherst where she lived 2. ________ peaceful life. She kept in touch with her friends by writing letters and was 3. ________ (willing) to greet guests or, later in life, even leave her room.

  Dickinson's poems are unique for the time she lived in; they contain short lines, typically lack titles, and often use half rhyme. Many of her poems deal 4. ________ themes of death and immortality (永生). Dickinson wrote about 1,800 poems during her lifetime, but fewer than a dozen of 5. ________ were published. Although most of her friends probably knew about Dickinson's writing, they didn't know 6. ________ she had produced so many poems until after her death in 1886, when her younger sister Lavinia discovered the place where the poems were hidden. 7. ________ her sister not discovered them, the broadness of Dickinson's work wouldn't have become known.

  Dickinson's first collection of poetry was published in 1890, the content of 8. ________ was heavily edited by the publishers 9. ________ (fit) the conventional poetic rules of the time. A complete and mostly unedited collection of her poetry became available for the first time in 1955. Now Dickinson 10. ________ (consider) to be one of the most important American poets.