2. 外语
  3. Angiogenesis factor is a substance that can promote rapid healing of wounds. Scientists hold that angiogenesis factor can never

Angiogenesis factor is a substance that can promote rapid healing of wounds. Scientists hold that angiogenesis factor can never

admin2009-07-11  13
问题 Angiogenesis factor is a substance that can promote rapid healing of wounds.
Scientists hold that angiogenesis factor can never be produced artificially in the laboratory.
选项 A、Right
B、Wrong
C、Not mentioned
D、B
答案见第三段最后一句“Further research may permit scientists to create artificial angiogenesis factor in the laboratory”进一步的研究将可以使科学家们在实验室里合成人工血管生成因子。
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