小儿脓胸以哪种细菌侵入为主
A．链球菌
B．沙门菌
C．肺炎球菌
D．金黄色葡萄球菌
E．厌氧菌
参考答案：D
项目在核准文件有效期内未开工建设的，项目单位应在核准文件有效期届满( )日前向原项目核准机关申请延期。
A．15
B．20
C．25
D．30
The students were completely _____ in their reading.
A．absorbing
B．being absorbed
C．to absorb
D．absorbed
