生物种类的多样性实质上是，保护生物多样性最为有效的措施是。

看日历回答问题。

1. When is Alice's birthday?

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2. When is Devin's birthday?

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3. When is Leila's birthday?

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4. When is Julia's birthday?

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5. When is Holly's birthday?

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6. When is Frank's birthday?

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7. When is Scott's birthday?

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下颌第一磨牙的最小牙尖是

A．远中颊尖

B．远中尖

C．远中舌尖

D．第五牙尖

E．近中颊尖

心理生理学（）

A.对心理障碍的机制进行研究

B.如何运用心理学的手段对心理障碍进行调整和矫正

C.强调预防，主张采用心理学的方法改变或矫正人们有碍身心健康的生活方式和习惯

D.以研究心理因素引导躯体生理学改变为主要方向的学科

E.研究脑与行为的关系

使用口外矫形力移动下颌，下颌每侧可接受的力值是（）

A.500～1000g

B.500～800g

C.340～450g

D.800～1100g

E.1200～1700g

Which is not a characteristic of an RISC processor ( )

A．a high clock speed

B．a highly optimized pipeline

C．a few general-purpose registers

D．a limited amount of small instructions