艾里克森人为，青少年（12-18岁）人格发展的主要问题是（）。
A. 自主感对自卑感
B. 亲密感对孤独感
C. 自主感对同一感混乱
D. 同一感对同一感混乱
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In the summer of 1978, an English farmer discovered in his field that ______.
A. some of his wheat had been damaged
B. some of his wheat had fallen onto the ground
C. his grain was growing up in circles
D. his grain was moved into several circles
氧离曲线右移是因为( )。
A. 体温升高
B. 血液pH值升高
C. 血液PCO2降低
D. 2，3-磷酸甘油酸
E. H+浓度下降
What can we learn about Fredy
A. He helps those who will work hard themselves
B. He likes to give his help to anyone in need
C. He always gives help to the unemployed
D. He is easily moved by poor people
The third paragraph tells us that ______.
A. musicals are still new to Chinese
B. musicals are difficult to understand
C. the musical is not exactly a form of art
D. musicals can't be accepted by Chinese
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