今天手受伤了,疼
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场景分类下生物第五篇tyrannosaurus rex
0 c, D& e. S8 z6 |. @on the other hand,cold-blooded animals such as
most reptiles amphibians and insects are
not able(unable )to creat enough heat
in turning(internally) to raise their temperature
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a recent research study found that the chemical composition of bone of tyrannosaurus rex was
constant(consistent)with bones of
an animal
s(不要) that
have(has)
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生物第六篇electric fish
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the eel in the tank behind me
is able to(can) produce (
a strong jolt of) electricity to
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(in)here produce only
week(weak)
electric(electrical)
imporsers(inpulses) that are
used (useful) for navigating,locating
for(不要)! [( [0 D5 J# T" r6 O9 L
the
nice(knife) fish
2 y: Z; D K, k' F8 tlet it know when the signals
is(it) distorted by
trailroad(tree root)
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we have (
a tank here that's )
special(specially) equipment(equipped) to
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i
erd(urge) you all to
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now have a look at the
elect(electric )waves(rays)
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these organs contain a chemical that carr(
ies ) signal from one
nert(nerve)
and then(ending)to the next,not only in
races(rays)but
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that interrupt the
transittion(transmission)insporses(of impulses) from one
(nerve) to another
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this fish navigates using tiny receptorsin the
skin
: k3 m/ e3 I1 k3 n+ Vmy hand is hurt
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本帖最后由 功夫熊猫2 于 2008-8-19 16:42 编辑 ]