[单项选择]{{B}}第二篇{{/B}}

{{B}}Diabetes (糖尿病) and Eye Damage{{/B}} Over 2 million Canadians have diabetes. It is the leading cause of blindness in North Americans under 65 years of age. Diabetes is a condition where the body either cannot produce enough insulin (胰岛素) or cannot respond properly to insulin. Insulin is important because it moves glucose (葡萄糖), a simple sugar, into the body’s cells from the blood. The food people eat provides the body with glucose, which is used by the cells as a source of energy. If insulin isn’t available or doesn’t work correctly to move glucose from the blood into the cells, glucose will stay in the blood, leading to high blood sugar levels. High blood sugar levels damage the blood vessels, including the tiny blood vessels in the eye. This leads to an eye disease known as diabetic retinopathy (糖尿病型视网 A. without diabetes, B. without sugar, C. without insulin. D. without food. 查看答案 更多"{{B}}第二篇{{/B}} "的相关试题: [单项选择]{{B}}第二篇{{/B}} {{B}}Diabetes (糖尿病) and Eye Damage{{/B}} Over 2 million Canadians have diabetes. It is the leading cause of blindness in North Americans under 65 years of age. Diabetes is a condition where the body either cannot produce enough insulin (胰岛素) or cannot respond properly to insulin. Insulin is important because it moves glucose (葡萄糖), a simple sugar, into the body’s cells from the blood. The food people eat provides the body with glucose, which is used by the cells as a source of energy. If insulin isn’t available or doesn’t work correctly to move glucose from the blood into the cells, glucose will stay in the blood, leading to high blood sugar levels. High blood sugar levels damage the blood vessels, including the tiny blood vessels in the eye. This leads to an eye disease known as diabetic retinopathy (糖尿病型视网 A. "the nerve’s". B. "the blood’s". C. "the eye’s". D. "the retina’s". 查看答案 [单项选择]第二篇 　　 Mind-reading Machine 　　A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning (扫描) what’s happening in their brains. 　　When you look at something, your eyes send a signal about that object to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons (神经元) are responsible for this processing. 　　The fMRI (functional Magnetic Resonance Imaging) (功能性磁振造影) brain scans could generally match electrical activity in the brain to the basic shape of a picture that someone was looking at. 　　Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, the more blood will travel to that region. And by using fMRI, scientist A. The magnetic system in the brain. B. The central part of the heart. C. Oxygen-rich blood. D. Neurons in the brain. 查看答案 [单项选择]{{B}}第二篇{{/B}} {{B}}Electric Backpack{{/B}} Backpacks are convenient. They can hold your books, your lunch, and a change of clothes, leaving your hands free to do other things. Someday, if you don’t mind carrying a heavy load, your backpacks might also power your MF3 player, keep your cell phone running, and maybe even light your way home. Lawrence C. Rome and his colleagues from the University of Pennsylvania in Philadelphia and the Marine Biological Laboratory in Woods Hole, Mass., have invented a backpack that makes electricity from energy produced while its wearer walks. In military actions, search-and-rescue operations, and scientific field studies, people rely increasingly on cell phones, global positioning system (GPS) receivers, night-vision goggles, and other battery-powered devices to get aro A. they can be very large. B. they can hold as many things as you want to carry. C. your hands are freed to do other things. D. you do not have to carry things with you. 查看答案 我来回答: 提交 最新试题 ●    [判断题]一级化学防护服是消防员在短时间内处置高浓度、强渗透性气体化学品事件中穿着的化学防护服装。( ●    [单选题]当发现配电箱、电表箱箱体带电时，应（ ），查明带电原因，并作相应处理。 ●    [判断题]在进行变压器绕组频率响应试验时，铁芯必须可靠接地。 ●    [单选题]流体的连续性方程推导的基础是( )原理。 ●    [单选题]受限空间气体检测安全标准可燃气体浓度应小于爆炸下限的 （）报警值 ●    [单选题][单选]可能传播计算机病毒的载体是( )。 网站地图 我要搜题网  版权所有  ©2024  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 截图扫码使用小程序[完全免费查看答案] 前往小程序 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码