第23题: [单项选择]Astronauts are ______ all kinds of tests before they are actually sent up in a spacecraft. A. inclined to B. subjected to C. prone to D. bound to 参考答案:B 答案解析:(be) subjected to sth.(协为介词)遭受(痛苦),经受某种经历,蒙受…;be inclined to do sth.易于做某事的,有做某事的倾向的:be inclined to g