ertificate(证书、文聘) to prove this. One could only judge by its growth rings.РIf you insist on better documentation, the oldest animal ever was probably a tortoise that died in 1918. It had been captured(俘获、捕获) already full-grown in 1766, nine years before the American Revolution began and it died 152 years later as World War I came to a close.РTask 5Р【答案】РA.РPeople have different opinions on using animals for research.РB.Р1) for Рa. was tried first on animals.Рb. is dependent on Рc. using unwanted animals.Р2) against Рa. suffer Рb. unnecessaryРc. the same rights Р3) Рa. cell cultureРb. computer modeling.Р【原文】РEvery year about 17 million animals are used in Laboratory experiments. But in many countries today, a difficult question is being asked: Do we have the right to use animals in this way
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