Some people go back for their education to ________ another degree or diploma (文凭) to impress the society.

A．require

B．acquire

C．accept

D．request

如果来自远处某点的光经过角膜和晶状体折射后所成的像落在视网膜的_________方，这就是近视眼，矫正的方法是佩带一副_________透镜片做的眼镜。