题目内容

We cannot afford to take risks when people’s lives are ____.

A. playing out
B. at stake
C. stark
D. at extinction

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a semantic marker can serve for the following functions except:

A. organizing ideas.
B. making prediction
C. inferring logical relationship
D. telling opinion

The following expression may indicate a cause except:

A. in case of
B. on account of
C. attributed to
D. owing to

The following expression may indicate an effect except:

A. so that
B. as a consequence
C. thanks to
D. this is why

（1802-94）InetAddress类的作用是（）。

A. 是一个抽象类，封装了网络通信属性和方法
B. 是一个接口，封装了网络通信属性和方法
C. 封装了统一资源定位符
D. 封装了主机域名和IP地址