练习材料
Lesson53 Hot snake
At last firemen have put out a big forest fire in California. Since then, they have
been trying to find out how the fire began. Forest fires are often caused by broken glass
or by cigarette ends which people carelessly throw away. Yesterday the firemen
examined the ground carefully, but were not able to find any broken glass. They were
also quite sure that a cigarette end did not start the fire. This morning, however, a
fireman accidentally discovered the cause. He noticed the remains of a snake which
was wound round the electric wires of a 16,000-volt power line. In this way, he was
able to solve the mystery. The explanation was simple but very unusual. A bird had
snatched up the snake from the ground and then dropped it on to the wires. The snake
then wound itself round the wires. When it did so, it sent sparks down to the ground
and these immediately started a fire.
任务配置
L0 + L4
复盘总结#
阅读理解，对句子结构语法，句子之间的关系，及文章写作思路的梳理。
