【題目】Scientists around the world are working to________ (發(fā)現(xiàn))new medicine for cancer.

【答案】discover

【解析】

句意:全世界的科學(xué)家都在努力尋找治療癌癥的新藥。

根據(jù)提示詞“發(fā)現(xiàn)”,英文表達(dá)是discover,動(dòng)詞,前面有不定式符號(hào)to,所以這里用動(dòng)詞原形,故答案為discover。

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