一氧化碳中毒首要的治疗是
A．补液B．给氧C．强心剂D．脱水剂E．能量合剂
参考答案：B
—What does he do?
— . [ ]
A. He studies English
B. He does his homework
C. He's a student
D. He's my brother
增加食肉鱼不会导致（）
A、小于减少
B、浮游动物增加
C、浮游植物减少
D、蓝藻增多
