Which is not tumors markers?()
A. carcinoembryonic antigen ( CEA)
B. CA 15-3
CA 549
D. LDH
E. CA 125
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which is not the symptom of COPD?()
A. excessive cough
B. sputum production
C. shortness of breath
D. weight loss
E. hemoptysis
Write down characters according to the given pinyin.今天的西瓜比昨天guì______
Write down characters according to the given pinyin.下课以后,我们去gōngyuán______ 走走吧。
Write down characters according to the given pinyin.圣诞节kuài______ 到了。