Good news! The lesser long-nosed bats（小长鼻蝠）were once rare1animals, but now their numbers are growing.
In the past,many lesser long-nosed bats died because of illness and hunting.
In 1988, fewer than 1000 of them lived in the United States and Mexico（墨西哥） .
But now, there are more than 200000.
To protect（保护）the bats, the US creates2 National Bat Week（国际蝙蝠周）.
How can bats fly around and find food in the dark?
They can "see" with sound.
They make high-pitched（高音调）sounds.
Those sounds bounce off（反弹）of the plants and animals and make echoes4.
They follow（跟随）the echoes to find their food.
WORK LIKE A BEE
Of more than 1000 types（种类）of bats,only 3 suck blood（吸血）.
Others eat insects3and fruit.
They are helpful to us.
The lesser long-nosed bats like to eat agave nectar（龙舌兰花蜜）.
When a bat is eating, some of the pollen（花粉）sticks（粘）to its body.
It carries the pollen to other agave flowers.
In this way, the avage can produce more seeds（结籽）.
Can you see?
The bat works like a bee!
WORD BANK | 词汇
rare [reə(r)] 稀有的
create [kriˈeɪt] 设立
insect [ˈɪnsekt] 昆虫
echo [ˈekəʊ] 回声
文章摘录自21世纪学生英文报 小学
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