单项选择题

If a and b are the lengths of the legs of a right triangle whose hypotenuse is 10 and whose area is 20,what is the value of (a +b.2

A. 100
B. 120
C. 140
D.180
E.200
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单项选择题
Dan drove home from college at an average rate of 60 miles per hour. On his trip back to college, his rate was 10 miles per hour slower and the trip took him one hour longer than the drive home. How far is Dan’s home from the college
A. 65 miles
B. 100 miles
C. 200 miles
D. 280 miles
E. 300 miles
单项选择题
In many Western European nations, the law is seen as rigid and not open to interpretation. This rigidity grants a consistency to questions of law that many would argue is absent in other, more flexible systems. The European construction of law provides litigants with a clear picture of how a case will be decided. All parties involved are certain how judges will rule on issues. It is simple--judges will strictly follow the law. This simple fact, that the law will not change from one situation to another, allows for court systems in Western Europe to process cases efficiently and cuts down on the amount of frivolous lawsuits. It is useless for an individual to attempt a case if he knows in advance that the law is not in his favor. In the passage, the author is primarily concerned with（）

A. arguing for a universal application of Western European legal practices
B. decrying the rigidity and constancy of Western European legal practices
C. describing the potential benefits of Western European legal systems
D. defining the pros and cons of various legal systems
E. denouncing European law for its anti-consumer bias
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