专题03 阅读理解-冲刺2022年中考英语必考题型终极押题（山东专用）

冲刺2022年中考英语必考题型终极押题（山东专用）-阅读理解 （2022·广东深圳·模拟预测） Because of a sudden rise of COVID-19 cases in several Chinese cities, the country is making five COVID-19 antigen test kits (抗原检测试剂盒) available for self-testing, All made by local companies, the kits can be bought in stores and online. Antigen tests are used to test for COVID-19. But they work differently from the nucleic acid tests (核酸检测) that we are all familiar with. “Antigen is like the ‘clothes’ of the virus, while nucleic acid is the gene (基因) of the virus,” said Zhang Wenhong, head of the infectious disease department (感染科) at Fudan University’s Huashan Hospital. The antigen tests are beneficial because they produce results faster, in around 15 minutes, and don’t require a lab. People can use them in their own homes at their convenience. But they aren’t as accurate . “In the early stage of infection, the amount of virus can be very low,” Zhang said. “The nucleic acid test can detect it but an antigen test cannot.” According to the