【推荐2】根据课文内容填空

We have known about climate change for d    1    . There is little d    2     that Earth is getting warmer and warmer (see the graph). A warming ocean and atmosphere along with m    3     ice and rising sea levels provide evidence of a dramatic change in the global climate.

In 2013, a lot of people were s    4     by a news photo of a dead polar bear that was found on Norway’s Arctic island of Svalbard. A    5     to the scientists who found its dead body, all that remained of the polar bear was “skin and bones”. An expert who has studied polar bears for many years said that from the    6    of its dead body, the bear appeared to have s    7     and died. Experts claimed that low sea-ice levels c    8     by climate change meant the bear could not hunt seals as before, so it had to travel greater distances in order to find food. This alarming case s    9     how the increase in temperature had an i    10     on Earth’s ecology.

【推荐3】根据课文内容填空

As that heat rises, some of it is     1     by gases in the atmosphere and reflected back towards the planet’s     2    . Like the glass in a greenhouse     3     holds heat inside the building, gases in the air hold in heat around Earth. Scientists call this global heat-trapping     4     the greenhouse effect. The greenhouse effect keeps the temperature of our planet’s surface comfortably warm.

Several gases in the atmosphere     5     to global warming. The one you’ve     6     heard the most about is carbon dioxide. Carbon dioxide is a good heat-trapping gas—a greenhouse gas,     7     scientists say.     8     certain amount of carbon dioxide in the atmosphere is     9    . In fact, you add some     10     the air every time you breathe out.

【推荐1】● The human population has never been bigger, but in some ways the planet seems to be     1         2         3    . In the past, travelers from     4         5         6     spent months at sea. Now you just have to sit on a plane for a few hours. When you arrived in another country a hundred years ago, you saw     7         8         9     of clothing and buildings and discovered a     10         11         12     culture.（Fill in each blank with the missing words according to the text.）

【推荐2】Complete the passage with correct signposts.

SOHO working style is advanced and should be encouraged.     1    , working at home instead of office is cost-efficient to the whole society. It can save a lot of unnecessary costs. The employers no longer have to pay for Internet use, electricity and other expenses related to the office daily work.     2    , the SOHOs do not need to wake up early every morning just for taking the bus. They can spend longer time in sleeping than before, which will make them energetic at work. I think working at a flexible time schedule is beneficial to us to balance between family and work.     3    , this working style should be encouraged.

Not everyone can be a freelancer.     4    , being a freelancer requires some special qualities, such as self-control, perseverance, commitment to the plan and the like.     5    , I think not everyone can be a freelancer.     6    , being self-employed is not easy. Although this kind of lifestyle is attractive to a lot of people, it is also a riskier proposition than working at a traditional job.