Your baby is getting smarter every day. This week, try this test: Show her a toy, place it under a plastic cup, then remove the cup and let her get it. Do this two more times. Now take the toy and place it under a different object, such as a little box, and watch what she does. She'll still look under the cup for the object because she's associated the toy with the familiar covering. This may not seem like a sign of budding intelligence to you, but it is! She's learning about "object permanence" — the concept that things continue to exist even when she can't see them. It's an important step toward logical thought.

拿一个宝宝喜欢的玩具，然后从他手中拿过来放在一个塑料碗之类的东西下面盖起来。然后揭开盖子让他拿回玩具，重复再做两次（我儿子第二次就会自己上下面去找了）。再换一个不同的东西，比如用一个纸盒子盖住玩具，看看他会怎么办？我儿子虽然看见我把玩具藏纸盒下了，可他还是坚持要到碗下面去找，笑死人了！有自己会上纸盒下面找的吗？