48.The 42% of Americans who have at least one step-relative typically feel a stronger sense of obligation to their biological parent, child or sibling than to their step-relatives.

21.—Will you have a second child?—Haven’t decided yet. We ________ about it the whole year.

34.Early to bed and early to ______ makes a man healthy, wealthy and wise.

23.I suffered from _____ terrible cold that day and my friends told me to go to _____ doctor’s after work.

52.But other recent studies say marital breakups have mixed long-term effects, foster growth in some children and the resolve to build happier marriages of their own. 

14.The _______ of the Titanic was found in September 1985, but recovering it is a very difficult prospect.

5.正式群体的发展要经历下列哪些阶段?（ ）

14.“陵节而施”出自《礼记·学记》中的“不陵节而施之谓孙”，这向话指的是教育要遵循个体发展的（ ）。

4.中学生情绪发展的特点有（ ）。

11.It was at eleven o’clock _____ they went out of the cinema.

9. We agreed to accept _______ they thought was the best professor in the college.

35.The moon moves ______ the earth.