2022-2英语周报GYQ八年级答案

【语篇导读】本文是说明文。介绍了濒危动物redwolf的情况。12.A【解析】词义猜测题。根据第二段 The US Fishand Wildlife Service had been working for decades toreintroduce the species into the wild,but∴可知,情况进展不利,故选A13.D【解析】推理判断题。根据第三段 the agency isfocusing on"our commitment to get the science rightand rebuild trust with our neighbors∴·"以及 the decision made by the Fish and Wildlife Service"falls wellshort of what is needed to continue red wolf recovery"A知答案为D。14.B【解析】细节理解题。根据第四段 because peooIe are afraid to have red wolves reintroduced nearhuman communities.可知答案为B。15.C【解析】细节理解题。根据最后一段 they are shyanimals that they don t get close to humans and huntmostly at night可知答案为C。

1.C【解析】不同动物卵细胞的差异,是DNA的特异性造成的。衰老细胞内水分减少,细胞体积变小,衰老细胞的细胞核体积增大。原癌基因和抑癌基因都存在于正常的细胞中,原癌基因在正常情况下主要负责调节细胞周期,控制细胞生长和分裂的进程,抑癌基因主要是阻止细胞不正常的增殖,两者共同调控细胞的正常生长。在细胞凋亡过程中,部分酶的活性降低,与凋亡有关的酶的活性升高

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