It is already home to whales, seals and polar bears, but soon the Arctic (北极) must find __1__ for some Chinese visitors.

A team of nine scientists will __2__ to the Arctic this month to mark the opening of China's __3__ Arctic scientific research station, SOA (the State Oceanic Administration (国家海洋局) has __4__.

Construction of the station finished a while __5__, but operations were held __6__ during the polar night, __7__ normally runs from late October to the end of February. __8__this period, the sun never __9__ over the Arctic. And from mid-July to the end of August, the sun never sets, a time__10__ as polar day (极昼).

With territories (版图) __11__ far up into the northern half of the globe, China __12__Arctic studies to learn __13__ about its climatic and environmental changes. Many of these, __14__ sand storms and heavy droughts, are believed to have __15__ to do with the Arctic.

Research teams __16__ the area in 1999 and 2003, but the new station will allow scientists to study the Arctic in __17__ depth.

The station is a two-storey building and __18__ a laboratory, office, reading room, bedroom and storeroom. It can hold 20 to 25 researchers.

"It will be __19__ great support to the scientists' research there," said Xia Limin, an officer in SOA.

This year the SOA also plans to upgrade (提升) two existing scientific bases in the Antarctic (南极洲). They are "Great Wall", which was set up in 1985, and "Zhongshan", __20__ five years later.

A. house                   B. hotel                       C. palace                     D. room

A. journey                 B. travel                             C. trip                         D. tour

A. first                      B. second                     C. third                       D. fourth

A. told                      B. spoke                      C. announced                      D. published

A. before                  B. later                        C. after                        D. ago

A. forward                B. toward                    C. back                        D. ahead

A. which                   B. through which          C. that                         D. where

A. During                 B. While                      C. When                      D. As

A. raises                    B. rises                        C. lifts                         D. carries

A. knows                 B. to know                   C. known                     D. knowing

A. spreading            B. spreads                    C. to spread                 D. spread

A. works out            B. picks out                 C. keeps out                 D. carries out

A. less                     B. more                       C. few                         D. much

A. for example        B. such as                    C. for instance              D. such that

A. something           B. anything                  C. everything                      D. nothing

A. showed               B. went                       C. visited                     D. got

A. great                   B. greeting                   C. greater                    D. greatest

A. includes              B. contains                   C. including                 D. containing

A. to                B. for                          C. at                            D. of

A. establishing         B. to establish              C. established               D. establish

It is already home to whales, seals and polar bears, but soon the Arctic (北极) must find __1__ for some Chinese visitors.

A team of nine scientists will __2__ to the Arctic this month to mark the opening of China's __3__ Arctic scientific research station, SOA (the State Oceanic Administration (国家海洋局) has __4__.

Construction of the station finished a while __5__, but operations were held __6__ during the polar night, __7__ normally runs from late October to the end of February. __8__this period, the sun never __9__ over the Arctic. And from mid-July to the end of August, the sun never sets, a time__10__ as polar day (极昼).

With territories (版图) __11__ far up into the northern half of the globe, China __12__Arctic studies to learn __13__ about its climatic and environmental changes. Many of these, __14__ sand storms and heavy droughts, are believed to have __15__ to do with the Arctic.

Research teams __16__ the area in 1999 and 2003, but the new station will allow scientists to study the Arctic in __17__ depth.

The station is a two-storey building and __18__ a laboratory, office, reading room, bedroom and storeroom. It can hold 20 to 25 researchers.

"It will be __19__ great support to the scientists' research there," said Xia Limin, an officer in SOA.

This year the SOA also plans to upgrade (提升) two existing scientific bases in the Antarctic (南极洲). They are "Great Wall", which was set up in 1985, and "Zhongshan", __20__ five years later.

1. A. house                  B. hotel                        C. palace                     D. room

2. A. journey                B. travel                       C. trip                         D. tour

3. A. first                     B. second                    C. third                        D. fourth

4. A. told                     B. spoke                      C. announced                      D. published

5. A. before                  B. later                        C. after                        D. ago

6. A. forward                      B. toward                    C. back                       D. ahead

7. A. which                  B. through which          C. that                         D. where

8. A. During                 B. While                      C. When                      D. As

9. A. raises                   B. rises                        C. lifts                         D. carries

10. A. knows                      B. to know                   C. known                    D. knowing

11. A. spreading            B. spreads                    C. to spread                 D. spread

12. A. works out          B. picks out                 C. keeps out                 D. carries out

13. A. less                    B. more                       C. few                         D. much

14. A. for example        B. such as                    C. for instance             D. such that

15. A. something          B. anything                  C. everything                      D. nothing

16. A. showed              B. went                       C. visited                     D. got

17. A. great                  B. greeting                   C. greater                    D. greatest

18. A. includes             B. contains                   C. including                 D. containing

19. A. to                      B. for                          C. at                            D. of

20. A. establishing         B. to establish               C. established               D. establish

It is already home to whales, seals and polar bears, but soon the Arctic (北极) must find __1__ for some Chinese visitors.

A team of nine scientists will __2__ to the Arctic this month to mark the opening of China's __3__ Arctic scientific research station, SOA (the State Oceanic Administration (国家海洋局) has __4__.

Construction of the station finished a while __5__, but operations were held __6__ during the polar night, __7__ normally runs from late October to the end of February. __8__this period, the sun never __9__ over the Arctic. And from mid-July to the end of August, the sun never sets, a time__10__ as polar day (极昼).

With territories (版图) __11__ far up into the northern half of the globe, China __12__Arctic studies to learn __13__ about its climatic and environmental changes. Many of these, __14__ sand storms and heavy droughts, are believed to have __15__ to do with the Arctic.

Research teams __16__ the area in 1999 and 2003, but the new station will allow scientists to study the Arctic in __17__ depth.

The station is a two-storey building and __18__ a laboratory, office, reading room, bedroom and storeroom. It can hold 20 to 25 researchers.

"It will be __19__ great support to the scientists' research there," said Xia Limin, an officer in SOA.

This year the SOA also plans to upgrade (提升) two existing scientific bases in the Antarctic (南极洲). They are "Great Wall", which was set up in 1985, and "Zhongshan", __20__ five years later.

1. A. house                  B. hotel                      C. palace                     D. room

2. A. journey               B. travel                             C. trip                         D. tour

3. A. first                     B. second                     C. third                      D. fourth

4. A. told                     B. spoke                          C. announced                      D. published

5. A. before                 B. later                        C. after                        D. ago

6. A. forward                      B. toward                    C. back                        D. ahead

7. A. which                  B. through which          C. that                         D. where

8. A. During               B. While                      C. When                          D. As

9. A. raises                   B. rises                        C. lifts                         D. carries

10. A. knows               B. to know                   C. known                     D. knowing

11. A. spreading           B. spreads                    C. to spread                 D. spread

12. A. works out           B. picks out                 C. keeps out                 D. carries out

13. A. less                    B. more                      C. few                         D. much

14. A. for example      B. such as                    C. for instance              D. such that

15. A. something          B. anything                  C. everything                      D. nothing

16. A. showed              B. went                      C. visited                     D. got

17. A. great                  B. greeting                   C. greater                    D. greatest

18. A. includes             B. contains                   C. including                 D. containing

19. A. to                          B. for                          C. at                            D. of

20. A. establishing               B. to establish              C. established               D. establish

It’s a sure sign that summer is over and winter is on the way — leaves that were once deep green turn red, yellow and bright orange. It happens every autumn. But did you ever wonder why?
The leaves start changing color when the nights start getting longer and the temperature starts getting cooler. Some scientists think that as the number of daylight hours shrinks, the leaves stop making chlorophyll which makes plants green. The reason is that the process of making chlorophyll requires sunlight. But according to horticulture (园艺) educator Susan Rose from Colorado State University, it turns out leaves don’t really change color at all. “The fall colors are actually there all along,” she said. “But they are covered by the green chlorophyll. As the chlorophyll stops being produced, the other colors can shine through.”
The kind of color that the leaves are going to change to is determined by the plant’s genetic (基因的) background. In some places, the leaves start changing color in September — before autumn even officially begins. In other places, they don’t change until late October or even November. Some scientists say the leaves have been changing color later than usual in recent years. And they think global warming has something to do with that.
In one study, researchers found that the growing season in the Northern Hemisphere was nearly a week longer, on average, in 2008 than it was in 1982. And a professor from Harvard University found that the leaves, west of Boston, Massachusetts, are changing color about three days later than they used to. However, other scientists disagree with the global warming theory. Susan Rose said the leaves in her part of Colorado are changing “right on schedule.” But the leaves in other parts of that state are running a little late. “The lateness in the mountains may have something to do with the really warm late summer and early fall,” she said. “But I’m afraid that’s just a guess.”
【小题1】According to Susan Rose, _____.

It was the first day of school. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a little old lady smiling at me. She said, “Hi handsome. My name is Rose. I’m eighty-seven years old. Can I give you a hug?”
I laughed and said, “Of course!” And she gave me a big hug. “Why are you in college at such an age?” I asked.
She jokingly replied, “I’m here to meet a rich husband, get married, and have kids and then retire and travel.”
“No seriously.”
“I always dreamed of having a college education and now I’m getting one!”
We became friends at once. Over the course of the year, Rose easily made friends wherever she went. She loved to dress up and she was happy with the attention given to her from the other students. At the end of the term we invited Rose to speak at our football banquet（宴会）. I’ll never forget what she taught us in her speech.
“We do not stop playing because we are old; we grow old because we stop playing. There are only four secrets to staying young, being happy and achieving success. You have to laugh and find humor every day. You’ve got to have a dream. When you lose your dreams, you die. We have so many people walking around who are dead and don’t even know it! There is a huge difference between growing older and growing up. If you are nineteen years old and lie in bed for one full year and don’t do one useful thing, you will turn twenty years old. If I am eighty-seven years old and stay in bed for a year and never do anything, I will turn eighty-eight. Anybody can grow older. That doesn’t take any ability. The idea is to grow up by always finding opportunity to do productive things. Have no regrets（遗憾；后悔）. The elderly usually don’t have regrets for what we did, but we regret for things we did not do.”
At the year’s end Rose finished the college degree. One week after graduation Rose died peacefully in her sleep. Over two thousand college students attended her funeral to honor the wonderful woman!
【小题1】While meeting Rose at the college for the first time, the author was curious about _______.