以下哪一项不属于超声检测骨骼系统的应用范围A．显示正常骨的完整声像图 B．骨折 C．

Nature is one of the main sources of inspiration(灵感来源) for artists. We’ve seen many works of art that are about trees, but in South Africa, there is a special work of art that can amaze you --- a bar in a tree.

The bar, named Sunland Big Baobab,    小题1:  a hollow tree. The huge tree is the wildest baobab tree(猴面包树---非洲) on record, which is a type of tree normally found in hot,   小题2:

Africa. The large tree, twenty two metres in    小题3: and forty-seven metres in girth(周长), stands on Sunland Farm. More amazingly, the tree is    小题4:  the oldest tree in the world --- it is about 6,000 years old!

长方形的宽为m米，长比宽的2倍少1，则此长方形的周长为（    ）米．

( )计核算工作中必不可少的环节，是国家赋予财会人员的监督权限。

A．审核原始凭证

B．编制记账凭证

C．编制会计分录

D．进行成本核算

如图所示是赵强同学用蜡烛、凸透镜和光屏在光具座上研究凸透镜成像规律的实验装置，其中明显还需要调整的是______．调整后烛焰能在光屏上成缩小______的实像；若要在透镜固定的情况下，得到再大一些的清晰实像，除将蜡烛适当向右移动外，还应将光屏向______移动．

在队列研究中，对研究对象的随访可能发生（）

A．无应答偏倚

B．失访偏倚

C．选择偏倚

D．混杂偏倚

E．领先时间偏倚