新会计准则规定，分期收款销售商品具有融资性质的，合同价与公允价值之间的差额，在合同内

Today’’s lecture we’’ll center on the prehistoric people of Nevada Desert. Now most of these prehistoric desert people (36)______the countryside throughout the year. You might think that they’’re wandering aimlessly. Far from it, they actually followed the (37)______of carefully planned moves. Where they moved depended on where food was (38)______. Places where plants were ripening or fish were (39)______. Now often when these people moved, they carried all their (40)______on their backs. But if the journey was long, extra food and tools were sometimes stored in caves or (41)______rocks. One of these caves is now an exciting (42)______ site. Beyond its small opening is a huge underground (43)______. Even though the cave is very large. It was certainly too dark and dusty for the travelers to (44)____________. But it was a great place to (45)____________. And tremendous amounts of food supplies and artifacts have been found there.The food includes dried fish, seeds and nuts. The artifacts include stone spear points and (46)____________. The spear points are actually rather small. Here is a picture of some that were found. You can see their size in relation to the hands holding them.

简述遗传素质在人的身心发展中的作用。

患者，缺失，下颌前突，上唇较长、唇肌较松弛，余牙正常，可摘局部义齿修复。

根据该患者的缺牙及口内情况，排牙时应选择下列哪类牙合关系 （）

A.排列成正常的超覆牙合关系

B.排列成浅覆牙合或对刃牙合关系

C.排列成深覆牙合关系

D.排列成开牙合关系

E.排列成反牙合关系

使用麻醉药品的医务人员必须是

A．有处方权的医务人员

B．医师以上专业技术职称，并经考核能正确使用麻醉药品

C．医士以上专业技术职称，并经考核能正确使用麻醉药品

D．主管医师以上专业技术职称，并经考核能正确使用麻醉药品

E．副主任医师以上专业技术职务者

左眼棱镜度为4△B60°也可表示为（）。

A、2△BI联合3.46△BD

B、2△BI联合3.46△BU

C、2△BO联合3.46△BD

D、2△BO联合3.46△BU