《2025年同步练习册明天出版社九年级英语全一册鲁教版五四制》

D
A hungry fly speeds through a forest.
It smells nectar(花蜜)and lands on a green
leaf.It starts to drink the sweet liquid(液
体).Suddenly,the fly's world turns green.
The two sides of the leaf close against each
other. Long green teeth lock together
around it. The fly has been caught by
Venus flytrap.There is no way to run away
alive.The Venus flytrap is perhaps the most
famous killer plant. However,scientists
have only recently started to understand
how it hunts(猎取)and eats.After years of
study, plant scientist Alexander Vol kov
believes he now knows the Venus flytrap's
secret.“ This,” says Vol kov,“ is an electrical
plant."
There are three small hairs along each
of the Venus flytrap's two leaves.When an
insect touches a hair,it creates an electrical
signal(信号)in the leaf.The insect can
continue feeding-for now.But if it touches
another hair within 20 seconds,the leaf
traps suddenly shut.This allows the plant to tell the difference between a drop of water,for example,and a moving insect.
Once trapped, an insect has little chance of staying alive.Instead of nectar,
the Venus flytrap now releases(释放)a different liquid-one that slowly eats away at the insect. Ten days later, almost nothing is left. The plant's leaves open again,and the Venus flytrap is ready for its next meal.
12.What does “ the fly's world turns green "
really mean?
A.The fly lands on a green leaf.
B.The fly speeds into the forest.
C.The fly drinks the green nectar.
D.The fly is trapped by the leaf.
13.What makes the leaf close?
A.The drop of water.
B.The smell of the insect.
C.The touches on the hairs.
D.The hunger of the plant.
14.Which of the following is true about the
Venus flytrap?
A.It uses electrical signals.
B.Its trap closes very slowly.
C.It makes three kinds of liquid.
D.It eats with its long teeth.
15.What's the best title for the passage?
A.Wonderful electricity.
B.Powerful hairs.
C.A famous killer plant.
D.The death of an insect.

答案： 12.D 13.C 14.A 15.C