3.Most of us are used to using the jet hand dryers(噴射式干手器)in public restrooms.They're surely very convenient-all we need to do is to hold up our hands for a few,seconds,until they're dry.And more importantly,they're.supposed to be
hygienic.However,a new study published in the journal Hospital Infection found that jet hand dryers actually spread more dangerous bacteria(細菌) than paper towels.
In the study,two restrooms:in each of three different hospitals in the UK,F(xiàn)rance and Italy were required to provide both jet hand dryers and paper towels for people to use.But on certain days,only.either the hand dryer or the paper towel dispenser(自動出紙機) was available to use.
The scientists found that when only the hand dryer was available,the amount of bacteria in the restrooms was 27.times higher than on other days.According to the study leader Mark Wilcox,an expert in medical microbiology at Leeds University,UK,hand dryers spread harmful bacteria,all over,the room.This:means that if people use these dryers,they're more likely to pick up bacteria.
At the same time,however,this raises the question of why these bacteria exist in the first place if people are washing their hands after using the restroom.
"The problem starts because some people do not wash their hands properly."Wilcox said.In other words,poor hand-washing leads to a large amount of bacteria being left on your hands.
(1)What does the underlined word hygienic"mean in Paragraph 1?
A.方便的
B.無菌的
C.衛(wèi)生的
(2)What is Paragraph 2 mainly about?
A.Why scientists studied hand dryers.
B.How scientists prepared for- their study.
C.How scientists carried out the experiment.
(3)It was found that the restrooms had more bacteria when
.
A.only the hand dryer was available to use.
B.only paper towels were available to use.
C.both the hand dryer and the paper towel dispenser were available to use.
(4)According to the last paragraph,how can we stop bacteria?
A.By washing our hands properly.
B.By not using the hand dryer.
C.By using paper towels
(5)What do we know from the passage?
A.Scientists will find a way to improve hand dryers.
B.Good habits can protect you from danger.
C.It's common to pick up bacteria in public places.