Typically, pubertal development takes about 2 years.

Shenita, a retired drama teacher, spends a lot of her time volunteering at a local community theater. She also enjoys weekend trips to see plays with her former colleagues. Shenita’s activities are consistent with the __________ theory of aging.

  Question 4.    

  Question 3.     Given that n is an integer, use algebra, to prove by contradiction, that if n3 is even then n is even.       [4]

三、填入最适合的答案。 Choose the best answer from the word banks. A.同意 B.唯一 C.相对来说  D.往往 E.所谓 F. 既然 G.变得 H.因此 I.之间 J.经常 1.刚上大学，很多的一年级学生[C1]还不适应得自己独立生活，或多或少也很想家，这是很自然的事。 2. 孩子和父母[C2-1]的距离是年龄的不同就是[C2-2]的“代沟“。 3.学生到了周末[C3]有很多功课要做，连睡觉的时间都不够。 4. 中国的经济发展越来越进步，[C4]想去中国的人也就越来越多了。 5. [C5-1]美国的大学教育比较重视个人，[C5-2]问题就是学费(xuéfèi; tuition)一年比一年高，很多学生没有办法负担这么高的学费。 6.[C6-1]大部分的学生都[C6-2]少考试，多做一点练习，老师就把考试变少了。 7.上完了这个学期的中文课，我们说中文不但[C7]更好而且发音也更标准了。

__________ is largely responsible for the worldwide rise in cesarean deliveries.

The ___________ attachment pattern reflects the greatest insecurity.

Beginning in middle childhood, children’s self-descriptions start to emphasize __________.

According to Noam Chomsky, all children have a __________ device that contains a universal grammar.

According to Erikson, a healthy outcome during infancy depends on the __________.