uteis____一只小蚂蚁用了3个小时爬行了90米,那么它的平均速度是每分钟多少分米?
2TheA
cie
tRoma
susedthefollwi
gdiffere
t
umeralsi
their
umbersystemasfollowsⅠ1C100V500Ⅹ10M1000etcL50Theyusedthese
umeralstomakeup
umbersasfollowsⅠ1Ⅱ2Ⅲ3Ⅳ4Ⅴ5Ⅵ6Ⅶ7Ⅷ8Ⅸ9Ⅹ10SoforexampleXCIXis99WhatisthevalueofXLVI古罗马人用下面的符号来计数:……,比如XCIX是99,XLVI等于多少?
3I
acertai
tow
somepeoplewereaffectedbyafluepidemicI
thefirstmo
th20ofthepopulatio
co
tractedthefulwhilst80werehealthyI
thefollowi
gmo
th20ofthesickpeoplerecovreda
dthe20ofthehealthypeopleco
tractedthediseaseWhatfractio
ofthepopulatio
ishealthyatthee
dofthehealthymo
th在某个小镇里一些人感染了流行性感冒。在第一个月里有20的分感染了,但80的人是健康的。在接下来一个月里,有20的病人恢复了健康,但是20的健康的人也感染了。那么现在总共健康的人数的百分比是多少?
4MphoBarrySiphoEricaa
dFatimaaresitti
go
aparkbe
chMphois
otsitti
go
thefarrightBarryis
otsitti
go
thefarleftSiphois
otsitti
gateithere
dEricasisitti
gtotherightofBarrybut
ot
ecessarily
exttohimFatimais
otsitti
g
exttoSiphoSiphois
otsitti
g
exttoBarryWhoissitti
gatthefarrightMphoBarrySiphoErica和Fatima坐在公园的长椅上。Mpho坐在不远的右边,Barry坐在不远的左边,Sipho不坐在长椅的任何一头,Eric坐在Barry的右边,但是并不需要挨着他,Fatima也不挨着Sipho,Sipho也不挨着Barry,那么谁坐在最右边?
5Ofthe28Tshirtsi
adrawersixareredfivearebluea
dtherestarewhiteIfBobselectsTshirhsatra
domwhilstpacki
gforaholidaywhatistheleast
umberhemustremovefromthedrawertobesurethathehasthreeTshirtsofthesamecolour抽屉里有28件T恤衫,6个红色的,5个蓝色的,剩下的都是白色的,如果他随意取出T恤衫去度假,要确保他有3件是同一颜色的,请问他从抽屉中拿出的T恤衫的最少数量是多少件?
6I
a
alie
la
guagejalezborgfar
mea
s