In my early childhood, my parents and teachers taught me to be persistent (执着) in every task I devoted myself to. I was   ____  that persistence is the only way towards success. But a small   ____  made me change my mind.
One day my twoyearold son,   ___   at a dozen of “stood” color markerpens, cheered excitedly，“Mummy, look! I did it.” Afterwards, he collected some ballpens,   ____  to do the same. Hard though he tried, the ballpens just lay  ____. He turned to me for help. Noticing they had either sharp or round ends, I said   ____， “Mummy can't help you.” To my surprise, he wouldn't listen and continued trying... I was dumbfounded by his persistence.
My son's behaviour reminded me of George who was always   ____  in his work and rarely talked to anyone. To him,   ____， there was no such thing called weekends or holidays. Our boss praised   __  about him and   ___  us to look up to him as a role model.
One day I met George. “Gonna work late again tonight？”
“Probably can't leave till midnight，” he said.
“How many hours have you put in here each week, eighty or ninety？”
“____.”
“Don't you have time to be with your family at all？”
He shook his head slowly and   ____  a sigh. “It's not what I wanted. But I have worked on it for so long. It's much too  ____  to even think about letting go.”
A year later I resigned. The  ____  thing I heard about him was that his wife divorced him. Since then I've never seen him. But occasionally his aged   ____  would come to my mind.
Until that day,  ____  knowing why the ballpens couldn't stand up, the twoyearold had   ____  the impossibility after many failures. He put aside all the ballpens and kept only those water markers for his “game”.   ___， he already learned to let go of his previous   ____ attempts.
In our daily life, many headaches can be avoided if we know how to   ____  them and then decisively let go of them immediately.

A．confident B．consistent C．conscious D．convinced

A．event B．incident C．accident D．affair

A．pointing B．shouting C．screaming D．laughing

A．insisting B．requiring C．intending D．urging

A．flat B．silent C．still D．quiet

A．deliberately B．casually C．unintentionally D．enthusiastically

A．interested B．busy C．devoted D．buried

A．therefore B．however C．otherwise D．though

A．high B．highly C．well D．much

A．promised B．demanded C．inspired D．appealed

A．At random B．At times C．At most D．At least

A．let off B．let out C．sent off D．sent out

A．encouraging B．comfortable C．painful D．ashamed

A．latter B．later C．last D．lately

A．picture B．figure C．reflection D．image

A．for B．with C．without D．besides

A．received B．accepted C．refused D．rejected

A．Generally B．Eventually C．Additionally D．Obviously

A．useless B．endless C．hopeful D．meaningful

A．clarify B．distinguish C．identify D．acknowledge