A.one should identify the virus which causes it B.one should consult a doctor as soon as possible C.one should take medicine upon catching the disease D.one should remain alert when the disease is spreading
A.多樣化 B.多元化 C.靈活性 D.多樣性
A.machine B.match C.headache D.chemistry
A.reserve B.decorate C.store D.keep
A.convince B.accept C.examine D.think