Hawaii is the only state not on the continent of North America. The State of Hawaii consists     1     8 bigger islands and 2000 more small islands. Of the bigger islands, Hawaii Island is not only the largest but also the youngest. People can find a few active volcanoes in the island. Mauna Loa and Kilauea are the most active volcanoes,     2     the American government has opened Volcanoes National Park. The island’s largest city Hino, also the second largest one in Hawaii State,     3     (stand) on the northeast coast of the island.

Every day, Duan Lianru spends several hours sitting in her office in Hunchun, Jilin province to make a     1     (compare) of hundreds of photos of Siberian tigers on the computer.

“It seems a little boring, but     2     (basic) I enjoy the work, which makes a connection between me and the big cats,” said the 36-year-old monitor from there search monitoring center of the Northeast China Tiger and Leopard National Park. The park     3     (stretch) across the provinces of Jilin and Heilongjiang.

Duan is responsible for identifying the tigers according to patterns on     4     (they) fur and giving them something like     5     identity card.

The park,     6     size exceeds (超过) 1.4 million hectares, is the most important habitat for wild Siberian tigers and Amur leopards in China.

The Siberian tigers’ “ID cards” come     7     a lot of important basic data that aids scientific conservation.     8     (base) on such information, Duan draws the family trees of the tigers.

Recent years     9     (see) a remarkable increase in the variety and number of wild animals and more tiger families have been found, including some back two or three generations.

“I feel quite honored to be involved in such significant work.” Duan said. “     10     (create) a more beautiful world, humans and wild animals, I hope, can live in harmony.”

Human beings are filling the world with waste. Every year, we pour million tons of rubbish     1     the eco-system. Eight million tons of that slips quietly into our oceans. Despite the statistics, change is     2     (worrying) slow. We're consuming more than ever. But we haven't yet invented     3     agreement for dealing with waste.

However, a few hardy companies are turning this tide of garbage into something reusable. TerraCycle is a “     4    (globe) leader in recycling typically hard-to-recycle waste”.

Rubbish can include anything from sweet     5     (wrap) to cigarette butts (烟头). It’s the garbage     6    has you hesitating over your rows of recycling cans,     7     (hunt) in vain for the correct symbol. Even harmless items such as bottle caps,     8     are made from a blend of plastics, are not accepted by most recycling project.

TerraCycle's model is simple. The company solves this by getting you to do the work. Customers sort and drop the waste at specified collection points, ranging from schools to homes, or ships it for free. A small fee     9     (donate) to a non-profit organization of your choice for each kilo of waste     10     (receive). The process is paid for through partnerships with brands including Febreze, Colgate and Bic. They receive positive PR and reduce their financial penalties (处罚) for end-of-use waste.