4.___________

4.___________A. drawing back B. putting on C. handing in D. holding out

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It took us quite a long time to get to the amusement park. It was journey.

It took us quite a long time to get to the amusement park. It was journey.A. three hourB. a three-hou

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新技术的建立和应用对生物学发展至关重要。下列技术(或仪器)与应用匹配正确的是

新技术的建立和应用对生物学发展至关重要。下列技术(或仪器)与应用匹配正确的是A.PCR技术——扩增蛋白质B.杂交瘤技术——制备单克隆抗体C.光学显微镜——观察叶绿体的基粒D.花粉离体培养——培育单倍体植

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have been telling me how great my writing was. 79_______

have been telling me how great my writing was. 79_______

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We learn from the text that a person with heart disease has a better chance of g

We learn from the text that a person with heart disease has a better chance of getting well ifA.he ha

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