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问题 单项选择题 A2型题

患者女性，42岁，因双手近端指间关节、掌指关节、腕关节肿痛伴展僵半年，查血尿酸430mmol/L，抗CCP抗体（+），X线片示腕关节骨质疏松，可见个别关节间隙狭窄，最可能的诊断是（）

A.强直性脊柱炎

B.骨关节炎

C.系统性红斑狼疮

D.类风湿关节炎

E.干燥综合征

答案

参考答案：D

填空题



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.
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多项选择题

如R为外电阻，r为内电阻，则全电路欧姆定律的错误表达式是（）。

A、I=E/（R+r）

B、I=E/R

C、I=E/r

D、I=E/（R-r）
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