A. The rising water.
B. The broken window.
C. The lucky dog.
D. The noisy environment.
46. Which phrase can describe Troy’s feelings at the beginning of the storm most
suitably?
A. In excitement.
B. In calm.
C. In anxiety.
D. In despair.
47. What will the author most probably talk about next?
A. How the other people struggled in the storm.
B. Why the rainstorm happened.
C. What damage the rainstorm caused.
D. How Donald and Troy struggled to save themselves
D
Due to climate change, Arctic ice is breaking up earlier in the spring, and its area is decreasing. This is creating problems for polar bears that make their homes off northern Alaska and in Hudson Bay.
Polar bears off Alaska normally hunt and raise their young on ice sheets that float on the ocean. But as the ice has melted, the polar bears have been forced to spend more time on land. There, they have begun to frequent beaches, feeding on the remains of whales caught by native hunters. For polar bears, this food is less nutritious than seals that they normally catch on ice sheets. The shrinking(减少) ice has also forced more polar bears into the ocean. In the past, they only had to swim short distances between ice sheets. But as the ice has shrunk, polar bears have been forced to swim longer and longer distances in the open ocean. This poses a severe danger during rough weather, and an increasing number of drowned polar bears have been observed.
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