高三阅读理解Tips for waiting in line When lining up at the
时间:2017-01-11 09:11 作者:admin 来源:本站整理
Tips for waiting in line
When lining up at the supermarket checkout counter, the lines next to us always seem to be moving faster than the one that we are standing in.
Now the New York Times has put together the research of scientists to give you some insights into the math and psychology of queuing. It also offered tips on picking the fastest line no matter if you’re lining up in a supermarket, a bank or anywhere else.
Picking someone with a full chart
US mathematician Dan Meyer believes that a chart(购物车) full of items doesn’t tell the whole story. “Every person requires a fixed amount of time to say hello, pay, say goodbye and clear out of the lane,” he said. And that amount of time is an average of 41 seconds per person.
On the other hand, the time that each item takes to be rung up is only three seconds. That means if there are five people ahead of you, each with ten items in their charts, the waiting time will be 355 seconds. But if there is only one person ahead of you ,with 50 items in the chart, the waiting time is 191 seconds. You do the math.
Study the customer
How many people are ahead of you is one thing, and who they are is another. For example, if they are old people – and this is not ageist(年龄歧视的) – they tend to move slower and delay the checkout process.
The items in their chart are also important. For example, four bottles of the same milk will definitely go faster than four completely different items.
Choose a “serpentine line”
In some places, there may be just one line leading to several checkout counters. The person at the head of the line goes to the next available counter. This is known as a “serpentine(蛇形的) line”. You should always choose a serpentine line because even if one of the cashiers or customers is slow, it won’t hold up an entire line.
According to Robert Samuel, a US science writer, around 90 percent of people are right-handed, which means they tend to go to the right. So heading to the opposite direction – left –will give you a better chance of finding a faster line.
21. If there are 6 people before you, and they buy 72 items altogether, then you have to wait about ________seconds.
A. 462 B. 318 C. 246 D. 216
22. What we needn’t consider before deciding which line to stand in?
A. The number of people before you.
B. The quantity of the goods to check out before you.
C. What kind of people before you.
D. How many left-handed people before you.
23. We can learn from the passage that________.
A. most people are used to choosing checkout counters on their right
B. we should always avoid lining up behind a crowded cart
C. 7 cups of the same kind need as much time as 7 different ones to be checked out
D. the cashiers and customers in a “serpentine line” are slow
答案 21—23 ADA
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