______ way to go from here to Beijing is by train.

A. Cheaper B. The cheaper

C. The cheapest D. Cheapest

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It’s not the right time to argue about who should be blamed. We’d better ________ and come up with a new way as soon as possible.

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Life is full of surprises and you never know how things will turn out .Sir John Gurdon is a good example of this. As a boy, he was told he was hopeless at science and finished bottom of his class. Now, aged 79, the very same Gurdon shared the 2012 Nobe Prize in Medicine with Japanese stem cell(干細胞) researcher Shinya Yamanaka.

Like so many scientists, Gurdon shows us where the power of curiosity and perseverance (堅持不懈)can lead.

At the age of 15 in 1948, Gurdon ranked last out of the 250 boys at his high school in biology and every other science subject. Gurdon’s high school science teacher even said that his dream of becoming a scientist was“quite ridiculous”.

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“My own belief is that we will, in the end, understand everything about how cells actually work,” Gurdon said.

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In 2006，Gurdon’s work was developed by Yamanaka to show that a sample(樣本）of a person’s skin can be used to create stem cells. Using this technique, doctors can repair a patient’s heart after a heart attack.

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B. Shiny a Yamanaka.

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