| Many researchers have found greater
dependence and obedience in very young girls, greater autonomy and activity in
boys. When a barrier is set up to separate children from their mothers, boys try
to knock it down; girls cry helplessly. There is little doubt that mother’s
encouragement or discouragement—of such behavior plays a major role in
determining adult personality. For example, a mother often stimulates male
autonomy by throwing a toy far away from her young son, thus silently suggesting
to him that he leaves her to get it. Animal studies suggest that there may be a biological factor in material behavior; mothers of some monkeys punish their male babies earlier and more often than their female offspring; they also touch their female babies more often and act more protectively toward them. As for the controversial question of female "{{U A. boys are active and obedient to girls B. girls are independent facing boys C. boys are brave in getting what they want D. girls don’t do anything in front of difficulties [单项选择]
Researchers have found that migrating animals use a variety of inner compasses to help them navigate. Some (1) by the position of the Sun. Others navigate by the stars. Some use the Sun as (2) guide during the day, and then (3) to star navigation by night. One study shows that the homing pigeon uses the Earth’s magnetic fields as a guide (4) finding its way home, and there are indications that various other animals, from insects to mollusks (软体动物), can also make (5) of magnetic compasses. (6) is of course very useful for a migrating bird to be able to switch to magnetic compass when clouds cover the sun; (7) it Would just have to land and wait for the Sun to come out again. (8) with the Sun or stars to steer by, the problems of navigation are more complicated (9) they might seem at first. For example, a worker honeybee (10) has found a rich source of nectar and pollen flies rapidly home to the hive to 我来回答: 提交
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