关于稳态的实现，下列叙述有误的是（） A.血液中的缓冲物质可以调节PH B.肾脏不时
题型：单项选择题
问题：
关于稳态的实现，下列叙述有误的是（）
A.血液中的缓冲物质可以调节PH
B.肾脏不时地排出内环境中多余的水、尿素、无机盐等
C.将食物残渣形成粪便排出体外
D.肝脏储存的肝糖原在血糖浓度下降时分解并不断释放入血液
题型：单项选择题
健康问题一直是生活中的热点话题。尤其对于女性来说，你知道穿矮高跟鞋和纯粹的高跟鞋对你身体健康的影响吗？
Healthy knees aren't the main consideration in choosing high heels, but new research says chunky heels are just __________as spindly stilettos（细高跟鞋）.
"It takes a long time to feel the effects of knee osteoarthritis（骨关节炎）— and once you do, it is too late," said Dr. Casey Kerrigan, leading researcher of the study and associate professor at Harvard Medical School's department of physical medicine.
"I compare it to smoking — one cigarette is not painful, but over a lifetime it is. Wide-heeled shoes feel comfortable, so women wear them all day long, "Kerrigan said.”They are better for your feet than stiletto heels, but just as had for your knees.”
The idea that high heels are bad for your health isn't new — scientists have warned women for years that they contribute to problems ranging from corns to hammer toes, tendonitis, knee pain, sprained（扭伤）ankles and back problems.
But in 1998, Kerdgan and a team of Harvard researchers were the first to link high heels and knee osteoarthritis, a painful joint disease that destroys cartilage（软骨）surrounding the knee.
The first study looked only at stiletto heels, and Kerrigan said she wanted to study the chunky high-heeled shoes she noticed many women wearing.
"This study confirms what we all intuitively（直觉地）know that high-heeled shoes of any kind are not good for our health," said Dr. Glenn Pfeifer, a San Francisco doctor and member of the American Academy of Orthopedic Surgeons who was not connected to the study.
1. What’s the main idea of the passage?
2. Which sentence in the passage is the closest in meaning to the following one?
In my opinion, it is similar to smoking, for smoking one cigarette does little harm but if you smoke all your life, it’ll be very painful.
3. Please fill in the blank in the passage with proper words or phrases to complete the sentence.（within ten words）
4. What do you think of wearing the chunky heels according to the passage? （within 30 words）
5. Translate the underlined sentence into Chinese.