全局择优搜索A算法描述？

糖尿病危象：指糖尿病控制不佳，在应激情况下诱发的酮症酸中毒，高渗性非酮症性昏迷，乳酸性酸中毒等急性并发症，糖尿病治疗不当或者胰岛素分泌异常而引起的低血糖也属于此类。

Most taxpayers have had enough income tax collected by their employers during the year. So they do not (36) any money. In fact, most Americans get some money back. Last year, the Internal Revenue Service returned at least some money to more than (37) Americans paying individual income tax.
The United States has what is called (38) . Tax rates increase as (39) increase. This year, people earning more than (40) are taxed at the highest rate.
Earnings above that amount are taxed at (41) . Earnings below that amount are taxed at lower rates.
Individuals who earn less than (42) pay no income tax. But they do pay (43) , Medicare and other taxes.
There are many different ways for people and businesses to reduce their (44) Most homeowners, for example, can reduce their taxes a little by reporting to the I.R.S. the interest they pay (45) . This is called a (46)
In 2004, personal income taxes provided the government with most of its money: (47) of the budget. Social security and other (48) taxes provided (49) . Other forms of income include (50) , money borrowed to (51) and special taxes on (52) .
But income from taxes did not provide enough to pay for government spending. The I.R.S. says the budget deficit for 2004 was about (53) dollars.
Preparing tax documents can be complex. The I.R.S. estimates that taxpayers need an average of about 13 hours to prepare tax documents. And that is just for the basic tax form. For business, the I.R.S. estimates an (54) needs more than 50 hours. This is why a lot of Americans pay (55) to complete their tax documents for them.

10kV电力贯通线，导线最小允许截面为（）mm²；。

A.25

B.35

C.50

D.70

脊柱血管瘤多见于（）

A.上颈椎

B.颈椎

C.胸椎

D.腰椎

E.骶椎

如果初生叶局部损伤，但有（）的面积具有功能时，则该幼苗列为正常幼苗。