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.

16.现代学制最早出现在欧洲，于19世纪末初步形成，下列属于单轨学制的国家是（ ）。

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

12.The factory produces half a million pairs of shoes every year, 80% _______ are sold abroad.

二、多选题（30分）31.His words ______ a threat.

5. Why the explosion occurred was ________ the laboratory attendant had been careless．

8. The police had difficulty in _______ the fans from rushing on to the stage to take photos with the singer.

35.The moon moves ______ the earth.

（ ）也叫“助长性迁移”，是指一种学习对另一种学习的促进作用。

33.They’re always ______ unimportant matters.

5.“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（ ）。

三、判断题（10分。正确请选择A，错误请选择B。）46. The study was published in latest issue of the journal Pediatrics.