张先生和妻子都是公务员，两人工作比较稳定。他们育有一子，今年14岁，正在读初中。夫

Roberta was born in 1967, and so in 1976 she was nine years old. It is clear from this example that the last two digits of a person’s birth year will be the same as the last two digits of the year of that person’s ninth birthday, except that the position of the digits will be reversed.
Which of the following is the best criticism of the assertions made above

A．The generalization is valid only for those birth years that do not end in two zeroes.

B．The example does not exhibit the same principle as is expressed in the generalization based on it.

C．The generalization is valid only for those birth years in which the last digit is one greater than the second-to-last digit.

D．The example cannot be shown to be correct unless the truth of the generalization is already presupposed.

E．(E) The generalization is valid only for those birth years in which the last digit is greater than five.

急性脊髓横贯性损害的鉴别主要包括下列疾病，但除外（）

A．急性硬膜外脓肿

B．原发性侧索硬化

C．脊髓转移性肿瘤

D．脊髓血管病

如图是人耳内声波传导示意图，据图回答：

（1）人的内耳由______、______和______组成．

（2）鼓室与咽通过______ 相连．

（3）（填序号）外界物体振动产生的声波被[______]收集，经[______]传到[______]，引起其振动，再由三块[______]传到内耳，刺激[______]内的感觉细胞而产生声音信息，声音信息沿着听觉神经传到大脑皮层的一定区域，形成听觉．

（4）为了保护耳，要注意：遇到巨大的声响迅速张开口，使______张开，以保持______两侧大气压力的平衡．

槟榔的处方用名是（）

A.官桂

B.息香

C.乌贼骨

D.大腹子

E.当门子

读地震波传播速度和距离地表深度的关系图，回答下列问题。

写出字母代表的地球内部三大圈层的名称：

A（）；B（）；C（）。