you have probably heard the expressio

you have probably heard the expressio
You have probably heard the expression,“It’s raining cats and dogs outside．”That
means
that it,S raining very hard I not that real cats and dogs are falling
from the sky ．However,one day in June,1882,it really did rain frogs over
Dubuque,Iowa．The frogs began falling 1 hailstones(冰雹)during a terrible
storm．
Hail is formed when drops of rainwater are 2 by heavy winds and
are carried high up 3 the air．There the raindrops become frozen．Many drops
may freeze together to form balls of ice；these ice balls,4 hailstones,then fall to
earth．
During the storm in Dubuque,the strong winds lifted small frogs
from nearby ponds(池塘) into the air along with raindrops．When some of these frogs
became covered with ice,both hailstones and“frog-stones”fell onto the
ground．
1,A.along with B.with C.of D.in
2,A．divided B．added C．changed D．caught
3,A.into B.in C.to D.with
4,A.or B.and C.with D.in
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