Both his parents look sad.Maybe they _ w_爱下问搜题

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问题选择题

Both his parents look sad. Maybe they _ what's happened to him. [ ]

A. knew

B. had known

C. have known

D. will know

答案

答案：B

单项选择题 A1/A2型题

常见的子宫内膜癌病理类型发病由高到低按顺序是（）

A.腺癌、腺棘癌、透明细胞癌、腺鳞癌

B.腺癌、腺鳞癌、透明细胞癌、腺棘癌

C.腺棘癌、腺癌、透明细胞癌、腺鳞癌

D.腺癌、腺棘癌、腺鳞癌、透明细胞癌

E.腺癌、腺鳞癌、腺棘癌、透明细胞癌

单项选择题

患儿，男，5岁，发热、咳脓痰2周。体温波动于39.0～39.3℃。胸片示大片致密影，右胸腔积液。胸穿抽出脓液。最常见的致病菌是

A．厌氧菌

B．肺炎球菌

C．链球菌

D．金黄色葡萄球菌

E．大肠杆菌