Since the brain is like a muscle, it must be challenged with the appropriate kind of resistance if it is to develop and grow. To develop any muscle, one has to engage in anaerobic exercises that feature a resistance or load that is very difficult to lift more than 10 to 15 times. Aerobic exercises will not develop the muscle's power. This is also true with the brain, for it will not develop only by thinking harder (an aerobic activity). What it requires is an anaerobic-like challenge, such as learning a new skill. Playing chess or mastering a new judo move can stimulate the brain's neural dendrite to grow. However, the best anaerobic exercise is one that challenges the person to exert maximum mental energy, like running the 100-meter dash instead of a mile. This is what CBEs do.
1. It is stated in the passage that ----.
A) in what way the brain is challenged is vital for its improvement
B) learning a new skill is only possible with the application of aerobic activity to the brain
C) despite being a muscle, the brain differs from other muscles in many ways
D) brains power is not connected with its shape or weight
E) some other muscles, apart from brain, effects your way of thinking
2. It is stated in the passage that, brain ----.
A) is the sole organizer of all actions
B) is a kind of muscle and needs some practices to be improved
C) resembles to running
D) is the product of anaerobic activities
E) can learn a new skill by help of anaerobic exercises
3. It's obvious in the passage ----.
A) brain can cope with a weight of 10 to 15 kilos
B) stimulating activities are good for body building
C) one exercises is best if it reveals full brain capacity
D) old people aren't allowed to anaerobic and aerobic exercises
E) heart is also a kind of muscle and needs anaerobic exercises
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