We should exercise to ______ our health. （ ）

多选题

We should exercise to ______ our health. （ ）

答案解析

单选题

We should think long term and take____measures.

答案解析

单选题

When conditions change with time, we should revise our policies_____.

答案解析

单选题

We should ______ some money for later use since we are getting old.

答案解析

材料题

between exercise and brain development.Judy Cameron,a scientist at Oregon Health and Science University,studies brain development.According to her research,it seems that exercise can make blood vessels,including those in the brain,stronger and more fully developed.Dr. Cameron claims this allows people who exercise to concentrate better. As she says:While we already know that exercise is good for the heart,exercise can literally cause physical changes in the brain.The effects of exercise on brai

答案解析