才才卢典''事'下-△速∵∵∵∵事〈事yo∵∵[f

（1）∵AD⊥BC ∴∠DAC+∠C=90度 ∵∠BAC=90° ∴∠BAF=∠C ∵OE⊥OB ∴∠BOA+∠COE=90° ∵∠BOA+∠ABF=90° ∴∠ABF=∠COE ∴△ABF∽△COE。 （2）∵AC：AB=2 ∴∠ABF=∠COE=∠BOA=45° O为AC边中点,即OC=AB 在三角形OEC中，作EM⊥OC，交点为M 在三角形ABF中，作FP⊥AB交于AB于P 在三角形AFO中，作FN⊥AO交于AO于N 则ΔBPF≌ΔOME ∴OE:OF=BF:OF ∵ΔBPF∽ΔFNO ∴BF:OF=PF:NO=PF:FN ∵∠PAF=∠ACB ∴PF:FN=AB:AC=1:2 ∴OF:OE=2 （3） 解法1： ∵∠BAD+∠DAC=90°，∠DAB+∠ABD=90° ∴∠DAC=∠ABD 又∠BAC=∠AOG=90°，AB=OA ∴△ABC≌△OAG ∴OG=AC=2AB ∵OG⊥OA ∴AB∥OG ∴△ABF∽△GOF ∴OF/BF=OG/AB OF/OE=OF/BF=OG/AB=2。 解法2： 过O作AC垂线并交BC于H ∵∠AFB=∠OEC ∴∠AFO=∠HEO ∵∠BAF=∠ECO ∴∠FAO=∠EHO ∴△OEH∽△OFA ∴OF：OE=OA：OH=2：1 故OF：OE=2

歌曲名:Ball And Chain (Live At Gelredome)

歌手:Anouk

专辑:Live At Gelredome

I just wanna be your ball and chain

Wrapped around your finger

Locked up, tied me down

Follow you forever

Never let you get away,

Holding on like a ball and chain

I never wanted to stay

In one place too long

Oh no, not me, I didn't wanna be

A victim of that fatal touch

When you want someone too much but

You, you'll be the end of me

And I don't want to hurt anymore

I just wanna be your ball and chain

Wrapped around your finger

Locked up, tied me down

Follow you forever

Never let you get away,

Holding on like a ball and chain

I tried my best to avoid

Making promises

Oh, no, not me, I didn't wanna

Be a prisoner of that tender trap

When there's no turning back but

You, you got me on my knees

And I won't be afraid anymore

I just wanna be your ball and chain

Wrapped around your finger

Locked up, tied me down

Follow you forever

Never let you get away,

Holding on like a ball and chain

(rap)

I know it's been some time confined to be alone

but I know I found the one who's gots be this loves jones

you know that I get open when you rubbing my back the goose bumps

and chills must be proof of that

cause I'm feeling when your dealing all the knowledge

you've got about making it good when you touching my spots

I've got lots of love'n when we bubble'n right,

I look forward to the time when the day turns night,

You've got to meet me at the crib for a quarter to nine

and at that time love devine what do I find

I won't be afraid anymore

The sight of you be wanting me just haunting

my fight boy be my ball and chain, yo it's gotta be right

I just wanna be your ball and chain

Wrapped around your finger

Locked up, tied me down

Follow you forever

Never let you get away,

Holding on like a ball and chain

I just wanna be your ball and chain

Wrapped around your finger

Locked up, tied me down

Follow you forever

Never let you get away,

Holding on like a ball and chain

http://musicbaiducom/song/2850075