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don¡¯t touch it directly£¬as it tends to get pretty hot£®

Egloo started crowd-funded through an Indiegogo campaign last year£¬blowing past its initial goal of $30£¬000 and getting $262£¬5 13 by the end of the campaign£®It¡¯s currently available for purchase via the Egloo website£¬for anywhere between $50 and $100£¬depending on size£¬color and glaze£®Considering some users pay that much for heat every couple of weeks£¬the price seems very attractive£® 24£®What does¡°it¡±refer to in the 2nd paragraph? A£®Heat£® B£®Egloo£®

C£®Electricity£®

D£®Tealight£®

25£®What should we be cautious of when using Egloo? A£®Its size£® B£®Its weight£® C£®Its temperature£® 26£®What can we learn from the last paragraph? A£®Egloo Can be bought in stores anywhere£® B£®Egloo had planned to raise $30£¬000 at first£® C£®Egloo is much cheaper online than in stores£® D£®Egloo got investment from the government£®

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It¡¯s hair-raising news for criminals on the run£®Scientists behind a new study have worked out how to identify individuals only based on the proteins(µ°°×ÖÊ)in a single strand of their hair£®

While the police already look at DNA from hair as part of investigations£¬the technique is far from ideal£ºDNA is easily degradable£¬meaning it can only be analysed within a certain time period after the crime£®But the new technique could even be used to solve historical or archaeological cases£¬making it far superior to DNA sequencing in many ways£®

DNA degradation depends on several environmental factors including temperature£¬humidity and PH£®It is also affected by the activity of bacteria and other microorganisms£®In contrast£¬actual hairs can survive for a long time-sometimes centuries£®After bones and teeth£¬hair is in fact one of the most resistant structures of the human body£®

In order to understand how the protein can be used to identify individuals£¬it is important to understand mat proteins are coded by DNA£®This means that a certain level of the genetic variation that we see in different people¡¯s DNA passes into their proteins£®In fact£¬genetic information in the DNA is translated into amino-acid chains that make up proteins£®

The method not only allows for human identification but it can also reveal how old the sample is and what region it comes from£¬so that we can distinguish between current and ancient samples. But while the discovery is exciting£¬the technique is not quite polished enough to be used in the court room£®The main task now will be to analyse hair samples from all over the world£¬which will

D£®Its price£®

make it a lot more reliable£®

The new discovery will boost the significance of hair as evidence in courts£¬at a time when some forensic(˾·¨¼ø¶¨µÄ)disciplines have been criticised in the US£®It will also be of great use in archaeology£®