(课文缩写)Li Daiyu and Liu Qian were on a trip     1     Canada to visit their cousins in Montreal. They decided to fly to Vancouver and then take the train from west to east across Canada. The thought of crossing the whole continent was     2     (excite).

Danny Lin, their friend, was waiting at the airport. He was going to take     3    (they) to catch “The True North”, the cross-Canada train. On the way to the station, he chatted about their trip. “You are going to see some great scenery. Going eastward, you’ll pass mountains and the thousands of lakes, and forests, as well as wide rivers and large cities. Some people have the idea     4     you can cross Canada in less than five days, but they forget that Canada is 5,500 kilometres from coast to coast. Vancouver is Canada’s warmest part. People say it is Canada’s most beautiful city,     5    (surround) by mountains and the Pacific Ocean. Skiing in the Rocky Mountains and sailing in the harbor     6    (make) Vancouver one of Canada’s most popular cities     7     (live) in. Now, its population     8     (increase) rapidly. The coast north of Vancouver has some of     9     oldest and most beautiful forests in the world. It is so wet there that the trees are     10     (extreme) tall.”

【推荐2】Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Perhaps even more incredible is that it’s smack bang in the middle of Kentucky.

Mammoth Cave National Park preserves this unique and historical natural wonder. As large as the limestone cave system is, park officials, estimate there     1     be another 600 miles of cave passageways that have yet to be explored.

    2     those unexplored, more than 200 caves exist in the park that are disconnected from the larger system.

The incredible rock formations have resulted in the park     3     (recognize) as a World Heritage Site, thanks to its extraordinary size and scientific importance — making it one of only 13 natural US sites with that title.

The caves were created naturally by the process of limestone erosion, which is known as “karst topography”. Rain and rivers slowly dissolve and shape soft limestone, which creates the vast underground network. The system is still being shaped and carved today. Not only are they a stunning destination to visit, but the system also provides drinking water for roughly 40% of the US population — and they’re     4       historical significance too.

The caves act as a time capsule that preserve over 5,000 years of human history — and the caves’ first explorers were Native Americans, who     5       (mine) the upper levels of Mammoth Cave. Thanks to the cave system’s atmosphere and natural protection from any kind of human disturbance, the archaeological sites have been left in great shape. Several sets of Native American remains have been recovered,     6     (provide) fascinating evidence of pre-Columbian funerary practices.

Mammoth Cave was established as a national park thanks to strong local support. Back in the 1920s, Secretary of the Interior Hubert Work created the Southern Appalachian National Park Commission in 1925 to survey     7       (propose) park sites, including the caves. After years of work acquiring the land for the park, as well as building roads, trails, and public facilities, Mammoth Cave National Park was established on July 1, 1941.

Pioneering African Americans were some of the first cave guides, and are responsible for some of the more recently discovered passageways. Stephen Bishop, who was a slave, worked in the cave from 1838 to 1856 and ventured beyond the tour routes that     8     (establish). He crossed a terrifying drop called the “bottomless pit” to discover unmapped areas of the cave system. Although they were unrecognized at the time, pioneers like Bishop helped spark the golden age of cave exploration.

The park now receives around 2 million visitors a year, with roughly a quarter taking a tour of the caves – everything from a cultural tour to the more adventurous scrambling tours on offer. The cave supports more than 130 wildlife species, such as the eyeless cavefish,     9     has adapted to the lightless environment by no longer growing eyes, and the cave crayfish.

Mammoth Cave National Park is also much more than just a cave; its surrounding forest contains one of the    10     (diverse) habitats in the country. There are miles of trails open for horseback riding, with kayak and canoe trails and great fishing spots. There are also more than 1,300 flowering species in the forest, and animals like wood warblers, thrushes, and bald eagles can regularly be spotted.

Ancestry Travel

Everyone loves a holiday! A little time off for some much-    1    (need) R&R(rest and relaxation)can be exactly the thing to re-energize and refresh. That said, if you’re struggling to think of your next destination then look no further. Don’t waste time     2     (debate). Let your blood decide.

Everybody has a lineage(血统). Recently, finding out more     3     our family origins has become popular. By the start of 2019, 26 million people     4     (take) an ancestry DNA test at home, according to a report by MIT Technology Review. They believe by 2021 this number will have risen to 100 million.

This trend     5     (notice) by opportunistic travel operators. Some are looking to provide a service that both allows people to trace their heritage—by literally going back to their roots—and travel to the destinations     6     their ancestors originated.

Recently, Airbnb, an online lodging market place, has partnered with 23andMe, a DNA testing and analysis company,    7     (offer) recommendations that encourage travellers to walk in the footsteps of their forefathers. And they aren’t the only ones.

The Shelbourne hotel in Dublin has its own “genealogy butler(家谱管家)”. Hellen Kelly offers consultations to help guests trace their Irish line of descent(后代)using official records,     8     allows them to “fill in the blanks of their Irish ancestry”, she told Good Morning America.

The Conte Club, a luxury travel company, offers custom itineraries(行程)based on DNA tests. “These experiences are about exploring deeper into     9     we really are,” says Conte Club CEO Rebecca Fielding in an article in the Condé Nast Traveler. “It might be the most meaningful trip we can take.”

So next time you think of going on vacation, why not take a DNA test first?     10     you know how far your family has come, take the time to holiday back.