Sometimes，when you worry that you may fail an exam，you end up failing.Or during a seating arrangement in your class，when you are afraid to sit next to someone you don't like，you end up sharing the desk with him or her.
   This is what Murphy's Law（墨菲法則） tells us ：If things can go wrong，they will go wrong.But is it true？
   Of the studies about Murphy's Law，the most famous one is the buttered toast（烤面包片）phenomenon（現(xiàn)象）：One toast with butter falls，it lands butter-side down most of the time.
   To prove（證明） this，Robert Matthews did a lot of experiments with more than 1，000 British school kids in 2001.
   In the first experiment，each student put a piece of buttered toast on a plate，let it fall off 20 times and noted which side it landed on.Of almost 10，000 experiments，toast landed butter-side down 62 percent of the time.
   But you may ask：Is it the butter that plays a role？Here comes Matthews' second experiment.This time，instead of butter，the toast had a letter "B"written on one side.It still landed 58 percent of the time on the B-side.
   "Toast lands butter-side down because humans aren't tall enough to let it land any other way."Matthews said.

根據(jù)短文內(nèi)容判斷下列句子的正（A）誤（B）。
（1）According to Murphy's Law，if you don't want to be questioned by the teacher in class，you may end up failing answering the questions．

B

B

（2）In the first experiment of buttered toast，we know the toast landed butter-side down about 620 times．

B

B

（3）If the toast can land butter-side down，it will do according to Murphy's Law．

A

A

（4）In the first experiment，the butter plays a role according to Matthews．

B

B

（5）Murphy's Law doesn't depend on people's thoughts．

A

A