One important way is to exercise more often.Running,swimming or even walking can help a lot.Try to exercise for at least 30minutes a day.It's also important to go to bed and get up early.Studies show that the cold or flu virus(流感病毒) can live on our ha...
There are many different viruses that can cause cold symptoms, but about half of the time a cold is caused by a class of viruses called rhinoviruses. The rhinovirus gets into the cells lining your nose and starts reproducing. It arrives from other people -- it is not cold weather that ...
Place your hair on a piece of white paper and try to see how wide your hair is pretty thin, right Although the width of each person’s hair is a bit different, you could probably fit about lots of these virus-built battery parts, side to side, across one hair. These micro-batteries ...
48题答案:B 考查细节理解题,根据文中的第三段One important way is to exercise more often.Running,swimming or even walking can help a lot.Try to exercise for at least 30minutes a day.It's also important to go to bed and get up early.Studies show that the cold or flu virus(流感病毒) ...
C.Because it may help keep the flu virus away.D.Because it is not expensive for us to buy soap.60.What can we know from the passage?___A.Only Chinese medicine can help stop a cold.B.We should run or swim when we have a cold....
toa common cold. Coronavirus symptoms include a runny nose, cough, sorethroat, possibly a headache___maybe a fever, which can___for a couple of days.For those___a weakened immune system, the elderly and the very young, there's achance the virus could___a lower, and much more serious...
What is avirus? Here’s our full, formal definition ofvirus: Avirusis an ultramicroscopic (20 to 300 nm in diameter), metabolicallyinert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of anRNAorDNAcore, a protein coat...
Deceptive phishing (网络钓鱼) is one of the most common types of trick. It’s best to view all emails with care. Hackers can make emails look like real. company emails. That can trick readers into clicking on dangerous links. If doing so, you could end up introducing a virus to your ...
soonasthevirusisundercontrol.However,somepositivemeasureshavealreadybeentakenasaresultof COVID-19.Asthevirusisthoughttooriginatefrom wildlife,Chineseauthoritiesarerevisinglawsandregulationsregardingthecountry?smassivewildlifetrade inordertopreventfutureepidemics(流行病)—awin forbiodiversity. Thedeaths ofthousands of...
SARS is a respiratory illness caused by a virus. It is sometimes called severe acute respiratory syndrome coronavirus (SARS-CoV). Coronavirus is the name of a group of viruses. The viruses are common and usually cause mild infections, such as a cold.What are the signs and symptoms of SARS...