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七选五 Do you constantly use the computer, whether for learning or entertainment? Computers give off radiation that is bad for your health, but here are some ways to protect yourself from computer radiation . ___1___ Green tea can be absorbed by the body easily into a form of vitamin A, which helps reduce radiation. ___2___ It is advisable to attach a radiation filter plate (辐射过滤板) in front of your computer’s screen . Make sure to avoid putting any metal substances near your computer as these may have reflected some of the electromagnetic waves that are harmful to your health . ___3___ The brighter the screen the higher the radiation there will be and vice versa . You can also put some radiation-absorbing plants such as several cacti near your computer to prevent radiation . Make sure you do a skincare protection before sitting in front of the computer . ___4___ Wash your face soon after using the computer in order to reduce 70% of the radiation . ___5___ Old computer in general, has one to two times more radiations released than the new one within the same distance . A . And adjust the brightness of your computer screen . B . Apply a layer of facial mask to protect yourself . C . And adjust the sound level on your computer . D . The most efficient way is by drinking some coffee regularly . E . The simplest way is by drinking 2 & 3 cups of green tea every day . F . If possible, purchase a new computer instead of using an old model computer . G . It also helps keep our eyes see things clearly in the dark by improving the visual ability .
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【单选题】旋转脱硫的传播速度为( )
A.
大于风机的转速
B.
等于风机的转速
C.
有时候大于风机的转速,有时候小于风机的转速
D.
小于风机的转速
【单选题】Choose a subordinating conjunction to combine each pair of simple sentences. 选择合适的连词连接每一题中的两个句子。 The number of school bus casualty is not large. The safety of children is always of intense public conc...
A.
when
B.
unless
C.
because
D.
as
E.
although
F.
if
G.
that
【单选题】The table shows the number of school days each month during the last school year.【图片】Which of the graphs best represents the data?【图片】【图片】【图片】【图片】
A.
Graph 1.
B.
Graph 2.
C.
Graph 3.
D.
Graph 4.
【判断题】相对 抗生素 ,细菌素作用范围较窄,仅对与该种细菌有近缘关系的细菌才有作用。
A.
正确
B.
错误
【单选题】The table shows the number of school days each month during the last school year.Month Aug Sep Oct Nov Dec Jan Feb Mar AprNumber of Days 4 18 20 15 12 14 19 14 21Which of the graphs best repres...
A.
Graph 1
B.
Graph2
C.
Graph 3
D.
Graph 4
【判断题】学生在实验室期间,应遵守实验室相关规定,严格执行实验室操作规范,确保自身的健康安全,并爱护实验仪器及环境。
A.
正确
B.
错误
【单选题】旋转脱硫的传播速度为( )
A.
大于风机的转速
B.
等于风机的转速
C.
有时候大于风机的转速,有时候小于风机的转速
D.
小于风机的转速
【单选题】Choose a coordinating conjunction or a subordinating conjunction to combine each pair of simple sentences.(1)The number of school bus casualty is not large.(2)The safety of children is always of inten...
A.
although
B.
when
C.
unless
D.
because
【单选题】The number of the students of this school ____ large.
A.
are
B.
are not
C.
isn't
【多选题】出纳管理的主要工作包括:( )。
A.
现金日记账、银行存款日记账的管理
B.
资金日报表的管理
C.
支票管理
D.
进行银行对账并输出银行存款余额调节表。
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