Scientists are not alone in the fight against the virus（病毒），as various products and apps are giving them a hand.Here are some examples.
    Drones（無人機）
    Drones have played a major role in disinfection （消毒）.Police officers also use them to spread the latest information.What's more，they use drones to remind people to wear masks or warn them not to gather in large groups.
    Robots
    Robots are good helpers in the front lines.They do many tasks in hospitals，including sending medicine or meals，doing disinfection and taking patients' body temperature.This not only greatly reduces the burden（負擔(dān)） of medical workers，but also prevents the cross-infection （交叉感染）.
    Mini-programmes
    Different mini-programmes or apps that you don't need to download but can use on WeChat have also come to help.For example，you can check whether you have unknowingly travelled alongside infected patients.Community workers can collect information about people more easily with the help of mini-programmes.
    Health QR codes（健康碼）
    People in more than 100 cities can get their own health QR codes by applying（申請） through Alipay or WeChat.This way，they don't have to fill in information like their names，ages and living addresses over and over again when they enter public places.

（1）Drones have played a major role in disinfection.They

are used

are used

to spread the latest information by police officers to tell people what to do.
（2）Robots are good helpers in the front lines.They help

medical workers

medical workers

do much work in hospitals.
（3）You can use Mini-programmes

to check

to check

if there are any infected patients near you.
（4）By applying health QR codes，people don't have to fill in their

personal

personal

information over and over again when entering public places.
（5）According to the passage，we can know that various products and apps

help

help

scientists to fight against the virus.