1 . Most of Florida is a flat peninsula (半岛) with water on three sides and houses built as close to the shoreline as possible. For one thing we are more frequently the target of hurricanes than any other state; for another, our geography makes us more easily to be hurt by rising seas.
A news story about climate change in Florida popped up. Historically, scientists believed mangroves (红树林) didn’t live farther north than Cedar Key, in the middle of Florida’s Big Bend. But that’s not the case anymore. Samantha Chapman, a biology professor who’s been studying how Florida’s mangroves have been migrating (迁移), found them up near the St Mary’s River, which forms the border between Florida and Georgia. It seems that they soon be marching through Georgia and becoming a thriving new component of coastal habitats.
But a coastal biologist named Blair Witherington took issue on the matter. The mangroves weren’t spreading into a new territory, he pointed out. They were entering areas that had been classified as saltmarsh (盐沼), where the landscape was dominated by cordgrass. Saltmarsh and mangrove create very different habitats that attract a very different set of animals. “When one community replaces the other, this diversity is lost,” Witherington remarked. Changing the animals’ habitat has the potential to influence the whole food chain, making a widespread difference.
What was driving this? “Mangroves can survive a short freeze, but not a prolonged, hard freeze. By combing through the weather records kept by the state’s orange juice industry, biologists have been able to document that Florida is having fewer prolonged hard freezes than it used to. Then the mangroves have adapted by expanding their range.” Samantha explained.
“They’ve adapted in another way, too. Not only are the mangroves spreading into areas that once were unfriendly to them, but they have also changed their life cycle to speed things up. Normally it takes them about 15 years of growth before they start making seeds. Now, as they get into these marshes, they’re producing seeds when they’ re only a couple of years old,” Samantha said.
The problem with having too many mangroves by the sea is that climate change may overwhelm them. A study by the US Geological Survey said sea level rise could wipe out mangroves all along the Florida coast. So, here’s the question we humans have to consider: Nature is finding ways to adapt to how we’ve changed the climate. What are we doing to adapt to it? Or at least slow it down?
1. What can we learn about the state of Florida?| A．It could be affected by high tides easily. |
| B．Its geography fuels shipbuilding industry. |
| C．Its houses are built in a high-lying but flat area. |
| D．It is often hit by tornadoes and suffers huge losses. |
| A．They migrate to warmer regions. |
| B．They are marching into a new habitat. |
| C．They form the border between Florida and Georgia. |
| D．They are introduced into Florida to prevent flooding. |
| A．Saltmarsh is fragile and requires urgent protection. |
| B．Florida includes a rich diversity of natural habitats. |
| C．The benefits of the mangroves outweigh their troubles. |
| D．Everything in the ecosystem is connected complicatedly. |
| A．What mangroves had to face in their habitats. |
| B．Whether mangroves had influence on other plants. |
| C．How mangroves adapted to the changing environment. |
| D．Why mangroves had a different life cycle in marshes. |
| A．Human beings are supposed to worship nature. |
| B．It is urgent to grow more mangroves along coastlines. |
| C．Measures against mangroves’ migration are far from enough. |
| D．What we should do to stop the climate change is still up in the air. |
2 . Kunta is a small attractive stone-built town in England. Water is a natural gateway to the Cheviot Hills and the Northumberland National Park. From its main street formed by the Market Place and High Street three roads lead off through the foothills into the National Park. The main street has hotels, specialist shops, pottery(陶器) factories and grocery stores. The shopping centre in the area has a reputation for friendly, helpful service.
The beauty of the surrounding scenery is eye-opening: on the one side the fallen sandstone goes across the valley below and on the other the wonderful Cheviot Hills rising behind the town to form a splendid background. Alnwick is a town with a historic castle and the famous Alnwick Gardens lie a few miles south while the Scottish Borders are within easy travelling distance from Kunta on clean country roads. Therefore, the town is an excellent place for a holiday. It offers a wide range of accommodation, ranging from youth hostels(招待所), campsites to local hotels. The summer months see the town’s High Streets become a busy scene of local people and visitors. Each July the town holds its Glendale festival with a program of events spread over the weekend.
Activities to do in Kunta include bowling, skiing, junior football clubs, fitness clubs, running, tennis, and walking. The industries are sheep farming and tourism.
There is much evidence of settlements throughout the area dating back to pre Bronze(青铜器) Age times. The Roman period seems to have had little impact on the area. In the twelfth century, it was ruled by Anglo Saxons, then Danish and eventually the Normans. In the twelfth century, the population was little more than eighteen hundred.
1. What do you know about Kunta?| A．It is a small attractive town built on the top of a mountain. |
| B．It is a small beautiful English town built of stones. |
| C．It is near the most beautiful national park in England. |
| D．The largest shopping centre in England lies in Kunta. |
| A．beauty of the surrounding scenery | B．friendly and helpful service |
| C．wide range of accommodation | D．historic castles and famous gardens |
| A．people | B．location |
| C．environment | D．history |
