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问题 多项选择题

文雅教育，亦称“自由教育”，亚里士多德认为要实施文雅教育，必须具备的条件是（）

A.有一定经济基础

B.有闲暇时间

C.要有自由学科

D.要达到一定年龄

答案

参考答案：B, C

填空题

Read and write. 仿照例子，写出动词的不同形式。

Yesterday                                     Today                                           Tomorrow 

 worked                                        work                                             will work 

                                                     see                                                             

 bought                                                                                                            

                                                                                                         will open

                                                    teach                                                                                                

                                                     eat                                                               

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多项选择题

哪些是肾脏分泌的生物活性物质（）

A.血管紧张素

B.前列腺素

C.促红细胞生成素

D.肾素

E.1，25-（OH）2-D3
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