9．在中國(guó)，科學(xué)家則把精力集中在克隆動(dòng)物以及干細(xì)胞上．
In China，scientists havefocused/concentrated their effortson cloning animals，as well as cloned tissues．

分析 在中國(guó)，科學(xué)家則把精力集中在克隆動(dòng)物以及干細(xì)胞上．

解答 答案：focused/concentrated；on
解析：根據(jù)中文及所給英文題干可知，本題考查focus/concentrate one's effort（s）on doing sth"集中精力做某事"這一固定短語(yǔ)；另外根據(jù)have可知本句為現(xiàn)在完成時(shí)．綜上，本題答案為：focused/concentrated；on．

點(diǎn)評(píng) 本題考查句子翻譯，做此類題目時(shí)一定要根據(jù)中文及英文題干確定需要翻譯的成分，再找出與之對(duì)應(yīng)的英文并考慮各成分是否有形式的改變．

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