若不等式ax+b＜0的解集为x＞-1，则a，b应满足的条件为（） A

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问题选择题

若不等式ax+b＜0的解集为x＞-1，则a，b应满足的条件为（　　）

A．a＜0，且a=b

B．a＞0，且a=b

C．a＜0，且a=-b

D．a＞0，且a=-b

答案

答案：A

选择题

When the headmaster announced his plan in public at the school's opening ceremony, the ________

of the students present________ against it. [ ]

A. majority; were

B. most; were

C. most; did

D. majority; did

单项选择题

患者，男性，48岁，肺心病合并呼吸衰竭，心率120次／分，偶发房早，血气：PaO₂50mmHg，PaCO₂75mmHg，pH7.20，下列哪项处理重要（）

A.心得安

B.异搏定

C.奎尼丁

D.毒毛K

E.以上都不是