《2025年阳光夺冠八年级英语下册》

### D

Say the word shark to someone on the beach and you are sure to get a reaction(反应). Sharks have been the most dangerous predator (捕猎者) of ocean. Sharks are fish.
26. ________ They can be found in oceans all over the world, and they have also been found in some rivers and lakes.
One difference between most other fish and a shark is that most fish have bones(骨头) and a shark has cartilage(软骨).27. ________Another difference is that the shark is only able to swim forwards, while most fish can swim forwards and backwards. Fish also generally have slippery scales(滑溜的鱼鳞), while a shark has rough scales that feel like sandpaper.
28. ________ In fact, there are about 368 different types. The differences include colour, habitat, behavior and size. Sharks are also known for their very sharp teeth.29. ________ But they swallow large chunks of food. They have five rows of teeth. If a tooth is broken, a new one grows.
Sharks are carnivores, meaning that they eat meat.30. ________ In fact, chances of getting stung by a bee or getting hit by lightning are greater. Even so, experts say it is important to keep an eye out for sharks when swimming in the ocean.

A. But they do not normally attack(攻击) people.
B. Sharks can cause fear like no other fish in the sea.
C. They do not use their teeth to chew their food.
D. Cartilage is tough, but it is not as strong as bone.
E. Some act alone, while some hang out in groups.
F. They have been around since the time of dinosaurs.
G. There are many different types of sharks.

答案： 26. F 27. D 28. G 29. C 30. A

三、短文填空（10分）（大单元）

blue look part be thing clean protect see take year

Taihu Lake is a famous place of interest. If visitors look at Taihu Lake, they will 31. ________ clean water. Boats run under the white clouds and the 32. ________ sky. However, 15 years ago, the lake 33. ________ very different.

The lake is a 34. ________ of the Yangtze River and covers more than 2,000 square kilometers. About 17,000,000 people get water from it now, but the water was not so clean before. Since 2007, our country has done many 35. ________ to clean the waters of the lake. So far workers have 36. ________ lots of algae(藻) out of the lake.

The water of Taihu Lake is much 37. ________ than before.

After more than ten 38. ________ hard work, our country has thought of a scientific(科学的) way to treat the algae. Now few algae grow in the lake. There 39. ________ 23 kinds of waterbirds and more than 50 kinds of plants in Taihu Lake.

Our country will try other ways to 40. ________ the lake and make the pollution less. Taihu Lake will be greater in the future.

答案： 31. see 32. blue 33. looked 34. part 35. things 36. taken 37. cleaner 38. years' 39. are 40. protect