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【简答题】
美国著名儿童心理学家格塞尔做过一个很著名的实验~一双生子爬楼梯。在这个实验中，实验的对象是一对双生子，其中一个双生子从48起每天进行10分钟爬梯训练，连续6。到52时，他才能熟练地爬上5级楼梯。在此期间，另一个双生子不进行爬梯训练，而是从53才开始进行爬梯训练。结果发现两后，第二个双生子不用成人帮助就可以爬到楼梯顶端。 问题：（1）本实验说明了什么问题？ （2）依据本实验，对儿童的教育应当注意什么？
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举一反三
【单选题】What happened to Ms. White after she was taken back to the store?
A.
She was questioned by the police.
B.
She was shut in a small room for 20 minutes.
C.
She was insulted by the shopper around her.
D.
She was body-searched by the store manager.
【单选题】What happened to Ms. White after she was taken back to the store?
A.
She was questioned by the police.
B.
She was shut in a small room for 20 minutes.
C.
She was insulted by the shoppers around her.
D.
She was body-searched by the store manager.
【单选题】下列关于肾上腺素和去甲肾上腺素对心血管作用的叙述，错误的是
A.
去甲肾上腺素有强烈的缩血管作用
B.
两者都可引起肝脏血管收缩
C.
肾上腺素使心率增加，心肌收缩力加强
D.
肾上腺素对总外周阻力影响不大
E.
去甲肾上腺素对β2肾上腺素能受体的作用比肾上腺素弱
【单选题】Why was the woman at the airport?
A.
She was sraveling on business.
B.
She was seeing the man off.
C.
She was leaving for Greece.
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