1. John was not selected________; he was chosen for the job because he had the most experience.
A. deliberately
B. alternatively
C. momentously
D. arbitrarily
2. The differences between the male and female of this species become more ________with age.
A. divisible
B. pronounced
C. dictated
D. assured
【考博英语补全句子】
1. ______ ______ ______ ______ _______(事实上), I do not like violence.
2. Please don’t _______ _______(灰心), you still have more chances. 1.D
【句意】约翰不是任意地挑选的，他是因为最有经验而被选做这项工作。
【解析】副词词义辨析。deliberately“故意地;慎重地”;alternatively“非此即彼;二者择一地”;momentously“重大地”;arbitrarily“任意地;随意地;武断地”。由句中关键词“was not selected________”与“he was chosen for the job because he had the most experience他是因为最有经验而被选做这项工作”的对应知“任意地”符合语境，故D项正确。
2.B
【句意】这一物种的雄性与雌性之间的差异会随着年龄的增长而变得更明显。
【解析】形容词词义辨析。divisible“可分的;可分割的”;pronounced“显著的;明显的”;dictated“口述的”;assured“确定的;自信的”。由句中关键词“differences差异”、“with age随着年龄的增长”的对应和词义辨析知“明显的”符合语境，故B项正确。
【补全句子参考答案】
1. 句意：事实上，我不喜欢暴力。
答案：As a matter of fact
2. 句意：别灰心，你还有更多的机会
答案：lose heart