71. Schallert issued a warning to those who ____.

1. believe in the possibility of rewiring the brain
2. are ignorant of physiotherapy in the clinic
3. add exercise to partially paralyzed limbs
4. are on the verge of a stroke

72. Which of the following is Schallert's hypothesis for his investigation?

1. Earlier intervention should lead to even more dramatic improvements.
2. The critical period for brain damage is one week after injury.
3. A partially paralyzed limb can cause brain damages.
4. Physiotherapy is the key to brain recovery.

73. The results from Schallert's research ____.

1. reinforced the significance of physiotherapy after a stroke
2. indicated the fault with his experiment design
3. turned out the opposite
4. verified his hypothesis

74. The results made Schallert's team aware of the fact that ____.

1. glutamate can have toxic effects on healthy nerve sells
2. exercise can boost the release of glutamate
3. glutamate is a neurotransmitter
4. all of the above

75. Schallert would probably advise clinicians ____.

1. to administer drugs to block the effects of glutamate
2. to be watchful of the amount of exercise for stroke victims
3. to prescribe vigorous exercise to stroke victims one week after injury
4. to reconsider the significance of physiotherapy to brain damage

(Reference keys.)