cells have given the oxygen to the cells that need it, the red blood cells look dark blue.There are two... blood vessels you see on your hands and arms are veins. ……

Lobsters have blue blood. ……

of people in the UK have been giving blood. People can register to donate with the National Blood..., the National Blood Service hands out information on how to donate blood safely.The service has also ……

of being “smart”.In the more than 6,000 years of living in cities, humans have always had to solve....Smart city technologies have already been used in many places. Singapore, for example, introduced ……

of social responsibility and help save lives.Jiang Yuxi: Donating blood is a good way for students... will hopefully encourage students to donate blood and save lives. Qu Heshuang: Blood donation ……

,blood type(血型) and picture on it. But actually it's a smart card.Cards help safety"When kidspunch(刷卡...actually adv. 实际地semester n. 学期Parents have welcomed the card. Some students like it, too.Li Hengyi, 16 ……

students in Taiwan build their own “weapons“ against the virus. They invented smart...;They invented smart robots to keep their hands clean. The robots can spray sanitizer (消毒 ……

students in Taiwan build their own “weapons“ against the virus. They invented smart...;They invented smart robots to keep their hands clean. The robots can spray sanitizer (消毒 ……

Octopuses (章鱼) have blue blood (血液). ……

important. People have always known that. At one time, some people even drank blood to make them strong... a blood transfusion. Also we do not all have the same kind of blood. There are four groups – O, A, B ……

at many universities have to donate blood to meet the quota, according to a report from the Beijing News. Students can be punished if they are physically healthy but refuse to donate blood. Since ……

Thousands of students nationwide have responded to an urgent appeal for blood donors... rejected because they were underweight.Chen Duqing of a blood center in Ningbo said: “Students have ……

feeling like a celebrity. Eyes staring, mouths open, students examining my big nose, hands nervous.... Most have good intentions, but only a few are as effective as flesh-and-blood professors.Every ……

and O. But researchers at the University of Vermont, US, have discovered two new blood types... of his students discovered a fourth type, AB. Since then, over 20 blood group systems and seven antigen ……

when they complained about compulsory blood donations last month?Answers vary. Some students say... hurry?' they said."While the final days of donating blood proved uneventful as hundreds of students ……