[阅读选择]For any given task in Britain there are more men than are needed. Strong unions keep them there. In Fleet Street， home of some of London‘s biggest dailies， it is understood that when two unions quarrel over three jobs the argument is settled by giving each union two. That means 33 per cent over manning， 33 per cent less productivity than could be obtained.
What happens when disputes over job opportunities arise among British unions?
A、Thirty three per cent of the workers will be out of work.
B、More jobs will be created by the union.
C、More people will be employed than necessary.
D、The unions will try to increase productivity.
答案解析：本段开头告诉读者“…there are more men than are needed…when two unions quarrel over three jobs, the argument is settled by giving each union two”，接下来作者又进一步说明其实质，即它意味着“33 per cent over manning, 33 per cent less productivity than could be obtained”。
[阅读选择]We are so used to our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted. Because we can feel that things are heavy， we think of “weight” as being a fixed quality in an object， but it is not really fixed at all. If you could take a one-pound packet of butter 4， 000 miles out from the earth， it would weigh only a quarter of a pound.
How much would four pounds of tea weigh if it was taken 4，000 miles out from the surface of the earth?
答案解析：本题问的是一磅茶如果被带出离地球表面4000英里的地方，重量会是多少?4000这个数字比较关键，因为在本段最后一句中出现了这个词，一看该句If you could take a one-pound packet of butter 4, 000 miles out from the earth, it would weigh only a quarter of a pound.只是把名词换了一下，很显然答案就是变成原来重量的四分之一，因此正确答案是A。