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

（ ）也叫“助长性迁移”，是指一种学习对另一种学习的促进作用。

41.I have no alternative ______ to arrive late.

3. Every boy and every girl ________ pleased when they saw Shenzhou VI was sent up to space.

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

54.Zuffi describes Morandi as one of the most intimate and poetic expressionists of European art in the central decades of the 20th century.

20.Having a brother or sister protects adolescents against negative feelings such as loneliness and guilt, but they also have to learn to ________ and to control their emotions.

5.正式群体的发展要经历下列哪些阶段?（ ）

25.— We have to stop talking here outside. Listen, _______!—Hurry up, or we‘ll be late.

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.

18.We walked ________ into the forest and lost our way ; we _______regretted it.

43.I took ______ trouble over this job.