下列语句准确规范的是（） A．直线a、b相交于一点m B．

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问题选择题

下列语句准确规范的是（　　）

A．直线a、b相交于一点m

B．延长直线AB

C．反向延长射线AO（O是端点）

D．延长线段AB到C，使BC=AB

答案

A、交点应该用大写字母，故本选项错误；

B、直线是向两方无限延伸的，不能延长，故本选项错误；

C、端点应该是A，故本选项错误；

D、延长线段AB到C，使BC=AB，正确．

故选D．

选择题

For those with family members far away, the personal computer and the phone are important in staying________.

A．connected

B． connecting

C． to connect

D． to be connected

单项选择题

An issue subject to a vote at a stockholders' meeting is presented in a(n):()

A. interim report.

B. proxy statement.

C. management statement of responsibility.