By 2100, we will spend only a few hours ____ (travel) to Mars in space shuttles.
如图是某同学在使用刻度尺时的情形,请你指出其中的3处错误.
(1) ____;
(2) ____;
(3) ____
—He wants you to________your absence last night.
下面加线的字注音全都正确的一项是( )
①以平民身份相交往的朋友叫____
②在遇到磨难时结成的朋友叫____