Please read every sentence _______. The more _______ you are, the fewer mistakes you'll make.
A:carefully; carefully
B:careful; careful
C:carefully; careful
D:careful; carefully
右图能正确反映下列生理过程或现象之间关系的是
根据下面提供的实验材料用具和实验结果请你设计一个实验,探究蚯蚓身体的哪一端对光敏感(提示:成熟的蚯蚓身上有个环节,靠近环节的是前端).
如果|x|=|-5|,那么x等于( )