1 . A tiny Alaska village has experienced a boom in tourism in recent years as polar bears spend more time on land than on Arctic sea ice.

More than 2,000 people visited the northern Alaska village of Kaktovik in 2018 to see polar bears in the wild. The far north community lies in an area where increasingly higher temperature has sped up the movement of sea ice, the primary habitat(栖息地) of polar bears. As ice has gradually moved to deep water beyond the continental shelf, more bears are remaining on land to look for food.

Polar bears have always been a common sight on sea ice near Kaktovik, but villagers started noticing a change in the mid-1990s. More bears seemed to stay on land, and researchers began taking note of more female bears making homes in the snow on land instead of on the ice to raise their babies. U. S. Fish and Wildlife Service biologists began hearing reports of the increasing number of polar bears in the area in the early 2000s. As more attention was given to the plight (困境)of polar bears about a decade ago, more tourists started heading to Kaktovik.

The village had fewer than 50 visitors annually before 2011, said Jennifer Reed, of the Arctic National Wildlife Refuge. "Today we’re talking about hundreds and hundreds of visitors, many from around the world each year," Reed said. Most tourists visit in the fall, when bears are forced toward land because sea ice is farthest away from the shore. Bruce Inglangasak, a local hunter who sometimes offers wildlife-viewing tours, said been offering polar bear tours since 2004. Most of his clients(客户) are from China and Europe, as well as from the lower 48 U. S. states. Many tourists stay several days in the village, which has two small hotels. The villagers have benefited a lot from that. In turn, they provide more effective protection for polar bears with financial support from tourism development.

1. What causes more polar bears to stay on land in Kaktovik?

A．Food shortage.	B．Climate change.
C．Habitats, movement to shore.	D．Their preference for land.

2. How did common people feel about more sight of bears on land?

A．Excited.

B．Puzzled.

C．Concerned.

D．Shocked.

3. What can be inferred from the last paragraph?

A．Hotels in Kaktovik are in demand in autumn.

B．Kaktovik has about 50 visitors annually.

C．Inglangasak makes a living as a tour guide.

D．Tourism affects the balance of nature.

4. Which saying can describe the text?

A．The fittest can survive.	B．After a storm comes a calm.
C．There is always opportunity in crisis.	D．Every coin has two sides.

2 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Earth Day     1     (found) in 1970 as a day of education about environmental problems, and Earth Day 20 occurs on Wednesday, April 22—the holiday’s 50th anniversary. The holiday is now a global celebration that’s sometimes extended into Earth Week, a full seven days of     2     (event) focused on green living.

    3     (elect) to the U.S. Senate（参议院）in 1962, Senator Gaylord Nelson was determined to convince the federal government that the planet was     4     risk. In 1969, Nelson developed the idea for Earth Day after     5     (inspire) by the anti-Vietnam War “teach-ins” that were taking place on college campuses around the United States.

Denis Hayes, a young activist     6     had served as student president at Stanford University, was selected as Earth Day’s national coordinator（协调者）, and he worked with     7     army of student volunteers and several staff members from Nelson’s Senate office     8     (organize) the project.

The first Earth Day was effective at raising     9     (aware) about environmental problems and transforming public attitudes. Earth Day kicked off the “Environmental decade with a bang,” as Senator Nelson later put it. The theme of Earth Day 2020 is “climate action.” EarthDay.org hopes it will be the     10     (large) volunteer event in history.