英语周报九年级上第九期答案

8.(10分)(1)l甲状腺激素释放(1分)细胞代谢(细胞呼吸、产热)(1分)增加(1分)降低体脂(1分)增加摄食量(1分)(2)减少(1分)瘦素促使机体减少摄食(2分)(3)神经一体液(1分)稳态(相对稳定)(1分)解析:(1)冷觉感受器受到寒冷刺激时,通过传入神经将兴奋传到体温调节中枢下丘脑,下丘脑就会分泌促甲状腺激素释放激素,刺激垂体合成并分泌促甲状腺激素,促甲状腺激素随血液运输到甲状腺,促使甲状腺合成并分泌甲状腺激素,甲状腺激素促进细胞的代谢,增加产热,使机体抵御寒冷的环境,弥补了低温条件下因散热增加而导致的机体能量消耗的增加。由表中数据可知,实验组体重减轻、体脂含量较低(少)、摄食量增加,推测在低温环境下,动物通过减轻体脂、降低体重和增加摄食量适应低温环境。(2)瘦素促使机体减少摄食,增加能量释放,故瘦素含量减少时,会增加摄食量,利于动物适应低温环境(3)动物通过神经一体液调节,实现体重、摄食量等指标的生理变化,维持了内环境的稳态(相对稳定),最终适应了低温环境。

读后续写 One possible version)A bad guy just p/cked Kim up and took her away! yelled Julie. So shocked were Kims parents thatthey jumped up from the sofa and rushed over to Julie. Learning what had happened, they phoned thepolice without delay. The nextnt, they jumped into their car and drove off directed by Julie. By thenT had reached the alley, but the man was nowhere to be seen. "I must find Kim, "TJ said to himself. Heran along the alley to the end, where he spotted the man walking towards a white house. "Stop! Stop Withhese words, he charged at the guy fearlessly and held fast to Kim. However hard the guy tried to get rid ofTJ. TJ wouldnt give inAt that very moment, Kim s parents arrived. Help! Help! "TJ shouted. Immediately Kim's father tookoff toward the guy. Seeing this. he guy hurriedly let go of Kim and broke into a run. Kim's father dashedup, caught hold of him and pressed him to the ground. Kim ran crying into her mother s arms. Minutes later,the police arrived and arrested the guy. TJ breathed a sigh of relief and smiled happily. T]'s quick thinkingand bravery saved a little girl in the neighborhood from unimaginable consequences

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