This worksheet must be handed in printed the first day of class after this recess.
Read the passage, and choose the best answer to complete it logically.
Piranhas
Scientists in the UK have announced that the
piranha fish's reputation 1) __________ a fearsome 2) __________
may well not be deserved. The fish, which is found in the Amazon in Brazil,
have been portrayed as deadly 3) __________ that work in shoals to
overwhelm their prey and strip it of its flesh in seconds.
However, 4) __________ from St Andrews University say that piranhas are omnivores that mainly eat fish, plants and insects. They form big groups not to hunt but to defend 5) __________ against other predators, according to the team.
"Previously it was thought piranhas shoaled as it 6) __________ them to form a cooperative hunting group," said Professor Anne Magurran. "However, we have found that it is primarily a defensive 7) __________."
Piranhas can be attacked by animals 8) __________ dolphins, caimans and large fish, so forming a shoal is a good way of 9) __________ being killed. Piranhas of 10) __________ age stay in the middle of the group for 11) __________ and the 12) __________ of the shoal 13) __________ according to the level of 14) __________. When the water level is high, the fish form small groups as there is space to escape, but when the water level drops, they form large groups as protection against 15) __________.
However, 4) __________ from St Andrews University say that piranhas are omnivores that mainly eat fish, plants and insects. They form big groups not to hunt but to defend 5) __________ against other predators, according to the team.
"Previously it was thought piranhas shoaled as it 6) __________ them to form a cooperative hunting group," said Professor Anne Magurran. "However, we have found that it is primarily a defensive 7) __________."
Piranhas can be attacked by animals 8) __________ dolphins, caimans and large fish, so forming a shoal is a good way of 9) __________ being killed. Piranhas of 10) __________ age stay in the middle of the group for 11) __________ and the 12) __________ of the shoal 13) __________ according to the level of 14) __________. When the water level is high, the fish form small groups as there is space to escape, but when the water level drops, they form large groups as protection against 15) __________.
Comprehension
Questions
1
as
as
if
as
though
since
2
kill
killer
murderer
murder
3
carnivore
carnivorous
carnivors
carnivores
4
expert
expertise
experts
expectan
5
them
themselves
it
itself
6
able
ables
enable
enabled
7
behave
behaviour
misbehaviour
misbehaviours
8
such
as
like
as
such
9
prevent
preventing
avoid
avoiding
10
reproduce
reproductive
reproduction
reproductively
11
protection
protecting
protect
protective
12
rate
size
amount
dearth
13
different
differ
differs
defer
14
risk
fate
destiny
chance
15
predator
predators
predatory
predate
