第16题: [单项选择]The eye of the hurricane is ______. A. the powerful center of the storm B. the part that determines its direction C. the relatively calm center of the storm D. the center of low pressure 参考答案:C 答案解析:根据第三段倒数第二句话“The eye is a region of relative calm and clear skies in the center of the hurricane.”可知C
第17题: [单项选择]与细菌的运动有关的结构是()。 A. 荚膜 B. 鞭毛 C. 纤毛 D. 菌毛 E. 轴丝 参考答案:B