华慧考博-考博英语词汇分析(二十九)
1.One cannot be really happy if ______ he enjoys doing is ignored by society as of no value or importance.
A. That
B. How
C. what
D. where
C【句意】如果一个人喜欢做的事情被认为是没有价值或不重要的而被社会忽视,那么他不可能真正感到快乐。
【解析】语法结构——what引导主语从句。分析题干结构可知,主句是One cannot be really happy;if引导条件状语从句,其中“______ he enjoys doing”为该从句的主语,且doing是一个及物动词,因此这里要选择一个指物且能引导主语从句的词,故答案选项为C。
2.Brushing removes larger particles, but dentists suggest brushing the back of the tongue as well, where food residues and bacteria ______.
A. Flourish
B. collaborate
C. embark
D. congregate
D【句意】刷牙去除较大的颗粒,但牙医建议也刷洗食物残留和细菌聚集的舌头后面。
【解析】动词词义辨析。flourish“繁荣,兴旺;collaborate“合作;勾结;通敌”;embark“从事,着手;上船(或飞机)”;congregate“聚集”。由关键词“food residues and bacteria食物残留和细菌”的对应知“聚集”符合,由此知D项正确。
3.Stressful environment leads to unhealthy behaviors such as poor eating habits, which ______ increase the risk of high blood pressure and heart disease.
A. in turn
B. by chance
C. by fortune
D. in case
A【句意】紧张的环境导致诸如不良饮食习惯等不健康的行为,而这些行为反过来会增加患高血压和心脏病的风险。
【解析】词组辨析。in turn“轮流,依次;反过来”;by chance“偶然;意外地”;by fortune“凭运气”;in case“万一;假使”。由关键词“unhealthy behaviors不健康的行为”与“high blood pressure and heart disease高血压和心脏病”的对应知“反过来”符合语境,由此知A项正确。