1. The visible sign of ageing appears earlier in some individuals than in others.
2. Even a temporary isolation from the group strengthens the tendency towards conformity.
3. Experiments have demonstrated that infants as young as ten days may be acquired to suck at the sound of a buzzer if this is frequently presented just before the bottle is inserted in the mouth.
4. In prematurely born infants of 32 weeks responses to light, sound and even taste may occur.
5. In the book «Personality and Psychotherapy» J. Dollard and N. Miller tried to apply laws of learning to the problem of how neurotic behaviour is conditioned.
Объяснение:
1. He always askes a lot of questions.
2. She often complains of pain in her eyes.
3. They sometimes go to a dentist.
4. His wife works as a doctor here.
5. We always discuss such problems.
6. They usually visit their friends at the weekend.
7. I usually examine patients in Room Five.
8. The students always do such exercises at home.
9. The first-year students often translate texts with a dictionary.
10. You often speak too much.
11. Ann likes reading books about animals.
12. Sam and Kate usually visit their parents in summer.
13. The teacher knows these students well.