在叶肉细胞中，CO₂的固定场所是（ ）

判断是非的依据是法律和道德要求。（  ）

设a∈{﹣1，1，2，3}，则使函数y=x^a的值域为R且为奇函数的所有a值为（　　）

椭圆的左右焦点分别为,过焦点的倾斜角为直线交椭圆于A,B两点,弦长,若三角形ABF2的内切圆的面积为,则椭圆的离心率为   （   ）

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    If your child constantly moves when he's doing math homework or insists on listening to music while studying, take heart. Although it may seem like he's trying to drive you crazy, he's probably just using the strategies that help him learn.
    “I like to study at a desk in silence, and my daughter can't think that way. She likes to bounce around on a ball with music in the background,” says author Maureen McKay, whose website, Optimistic Outcomes, provides tips based on a child's learning style for parents. “Sometimes kids are just doing what works for them.”
    Three basic learning styles are auditory, kinesthetic(肌肉运动知觉的), and visual ones. Auditory learners prefer listening to explanations to reading them and may like to study by reciting information aloud. This type of learner may want to have background music while studying, or they may be distracted by noises and need a quiet environment to study. Kinesthetic learners learn by doing and touching something. They may have trouble sitting still while studying, and they are better able to understand information by writing it down or doing hands-on activities. Visual learners process new information by reading, looking at graphics, or watching a demonstration. Children with this learning style can grasp information presented in a chart or graph, but they may grow impatient listening to an explanation.
    Most people use a combination of styles but have a clear preference for one. Understanding your child's learning style can reduce homework frustrations and make it easier for families to communicate, says McKay. She observed different learning styles while working as a teacher's assistant, and she started researching strategies for working in different learning styles when her daughter began having trouble in elementary school.
    Because her daughter had difficulty listening in class, McKay looked for exercises to strengthen listening skills. Her daughter is now doing well in middle school, and she owes her success to the fact that her teachers and parents came to understand her unique style of learning.
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