《2025年新课程助学丛书英语八年级上册人教版》

C
Sunflowers are one of the most cheerful plants in nature. 41. ________ Their bright yellow petals(花瓣) and tall stems(茎) make them easy to recognize. Sunflowers are not only beautiful but also useful to humans and animals.
※ Growing Conditions
Sunflowers need plenty of sunlight to grow. 42. They can grow in many types of soil, but they prefer well - drained and nutrient - rich ground. Farmers often plant sunflowers in the open fields where they can get direct sunlight all day.
※ The Life Cycle of a Sunflower
A sunflower starts as a small seed(种子). 43. As the plant grows, it develops a thick stem and large leaves. After a few weeks, a bud(花蕾) forms at the top of the stem. 44. When the flower fully opens, it faces the sun all day long. This behavior is called "heliotropism(向日性)."
※ Why Are Sunflowers Special?
Sunflowers are important for the environment. 45. Additionally, sunflower seeds are a favorite food for birds and squirrels. People also use sunflower oil for cooking and skincare products.

答案： 41—45 EDFAB