Raising_______retirement age in progressive steps is in_____line with China’s labor market realities and should be prioritized, an official said Tuesday.

——Who knocked at the door?

——I’ve no idea. I just pretended nobody was at home, so I didn't ask who _____ was.

I ’d prefer to _________ my judgment until I find all the evidence.

高铁列车在启动阶段的运动可看作初速度为零的均加速直线运动，在启动阶段列车的动能( )

从文后的选项中，选出最适合的一项作为该语段的结尾。被细雨浸润、滋养的苏堤苏醒了。新柳夹道，枝头舒展，一片鲜嫩的绿色。这可爱的年轻的垂柳，像妩媚倩巧的少女，温柔轻盈;____________。

函数的图象可以看做是把函数y=sinx 的图象上所有点的纵坐标保持不变，横坐标缩短到原来的1/2倍而得到，那么的值为（）

Jerry knows nothing about the plan _____ his friends told him.

下列说法正确的是()

与上文衔接最恰当的一项是圆月慢慢地翻过山坡，把它的光芒射到了河边。___________

下列各句中，括号里的成语使用不正确的一句是()