The small black ants that we see running back and forth in the grass are the same ants that annoy(打扰)us by coming to our picnics uninvited.They are not trying to make pests of themselves, but are only doing the housekeeping job they were made for.They are nature’s cleanup crew.
One of these ants, scouting(侦察)in the grass, finds the trail of an injured beetle(甲虫).In some mysterious way the news spreads.Soon there are two ants, then a few more.Then a dozen or more are running around the beetle.Enough ants will come to put an end to it.
When the beetle is dead, the ants carry it away to their underground burrows(穴).The efficient(讲效率的)ants leave nothing in the grass but the empty shell.
(1)
The ants that come to our picnics are ________.
[ ]
A.
trying to make pests of themselves
B.
doing their job
C.
looking for company
D.
help injured insects
(2)
The selection says that the job of these ants is to ________.
[ ]
A.
clean up the grass
B.
kill all beetles
C.
make trails
D.
help injured insects
(3)
As soon as an ant finds an injured insect, it ________.