If my father back, please let me know.A. comes B. will come C. come 题目和参考答案——青夏教育精英家教网—

题目内容

If my father_________ back, please let me know.

A. comes B. will come C. come

【解析】

试题分析：句意: 如果我爸爸回来，请让我知道。If条件状语从句中用一般现在时表将来，主语my father是第三人称单数谓语动词要用第三人称单数，故选A。

考点：考查一般现在时态。

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Scientists have made the world’s first human-sheep----with the body of a sheep and half-human organs(器官). Amazing, but true. The sheep is15percent human and 85 percent sheep. The breakthrough(突破)makes it possible to use animal organs in human bodies in the future. Professor Esmail Zanjani of University of Nevada, US, has spent seven years And over $9 million on the work. Zanjani took stem cells(干细跑) from the human body and put them into the sheep while it was still in its mother’s body. The stem cells made other cells that grew into organs. Zanjani believe that in the future such sheep might be used to help humans. Two months later a human-sheep is born, it has a liver(肝脏), heart, ling(肺) and brain that are part-human. These organs could be used to help people in need of them. There are different opinions about his work, however. Some say that scientists don’t have the right to create new creature(生物). Using animal organ might bring animal viruses(病毒) into human bodies. Others are afraid that the work might change sheep. But Professor Anjani has said that this is impossible.

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