1.If we believe something is good and true we should____ to it.
A) hold up B) keep on C) hold on D) keep on
答案：C hold on to坚持，保持，不放弃抓住不放。
2.The storm____ all night.
A) hold back B) hold on C) hold off D) hold up
答案：B hold on 坚持，持续，符合题意。
3.It is the motor vehicle that enables people to visit each other and enlarges their____.
A) viewpoints B) sight C) horizons D) prospects
答案：C horizon(一个人思想之) 范围，眼界。
4.The manager gave one of the salesgirls an accusing look for her____ attitude toward customers.
A) impartial B) mild C) hostile D) opposing
答案：C hostile 敌视的，有敌意的。impartial公正的。mild 暖和的，温和的。opposing 反对的，对抗的。
5.If you do not fasten your safety belt, your chances of being____ will be greater.
A) hurt B) beaten C) damage D) stricken
答案：A hurt 伤害，损害，使受伤。 beat 敲，打;打败，打赢，战胜。damage 损坏。strike 打，击，敲 :The boy struck the man with a stone.
6.The jobs of wildlife technicians and biologists seemed_____ to him ,but one day he discovered their difference.
A) identical B) vertical C) parallel D) specific
答案：A identical (with) 完全相同的。vertical垂直的。parallel (to) 平行的。 specific 具体的，明确的;独特的。
7.The basic causes are unknown, although certain conditions that may lead to cancer have been____.
A) identified B) guaranteed C)notified D)conveyed
答案：A identify 认出(身份、物体等)。guarantee保证。notify 通知。convey 传达，表达。
