《2025年情景导学高中英语选择性必修第二册外研版》

Ⅱ. 七选五
Tuvalu is an island country. It is famous for its sandy beaches and turquoise (青绿色的) waters and has long been a popular tourist destination for nearby New Zealanders. However, Tuvalu is at risk of no longer existing because of the rising sea level.
Tuvalu is experiencing the harmful effects of global warming. As global temperatures rise, so does the ocean temperature. Due to the scientific law of “thermal (热的) expansion”, when water heats up it gets bigger. 1 Most experts claim that the effects of climate change will make Tuvalu uninhabitable in the next 50 to 100 years. Problems are already emerging. As sea level rises, ocean water containing high levels of salt is travelling further and further inland, destroying the little amount of soil that Tuvaluans have to grow crops.
Even before Tuvaluans began to suffer from the effects of climate change, life on Tuvalu was tough. 2 Most of the land on an atoll (环礁) is rock-hard and any soil that exists on it is usually thin and poor for growing crops. The nation has always had to import food apart from fish.
More serious than Tuvalu's lack of homegrown food has been its lack of drinking water. 3 Therefore, Tuvaluans rely almost entirely on rainwater for their need for water. Unfortunately, due to a geographical phenomenon known as La Niña (拉尼娜现象), Tuvalu often suffers from long periods of drought. In 2011, after months of no rain, the Prime Minister had to declare a state of emergency. 4
Tuvalu's problems have led some of its inhabitants to consider migrating to Australia or New Zealand. 5 They know they'll have to someday, but they want to remain for as long as possible and make the world aware of what is happening to their homeland due to climate change.

A.This is largely due to the geological make-up of atolls.
B.And as a member of the United Nations, they are just doing that.
C.However, they are not willing to abandon the land of their forefathers so easily.
D.Therefore, sea level is rising and for low-lying Tuvalu, this spells disaster.
E.Tuvalu's representatives demanded that nations should take a more responsible role in reducing gas emissions.
F.It was a desperate situation, and but for emergency shipments from New Zealand and Australia, many Tuvaluans would have died.
G. Unlike normal islands, atolls have no rivers or streams, which means that most of Tuvalu hasnogroundwatertousefordrinking.

答案： 1-5 DAGFC