1. He is ______ about his chances of winning a gold medal in the Olympics next year.
A. optimistic
B. optional
C. outstanding
D. obvious

2. It is said that the custom of shaking hands originated when primitive men held out empty hands to indicate that they had no ______ weapons and were thus amicably disposed.
A. lethal
B. concealed
C. murderous
D. secret

【每日译词:力不从心】
1. 老王年事已高，工作有些力不从心。
2. 我深感力不从心。


【华慧考博】考博英语每日一练（6.8）参考答案
1.A
【句意】他对明年在奥运会上赢得金牌的可能性是乐观的。
【解析】形容词词义辨析。optimistic“乐观的”；optional“可选择的；选修的”；outstanding“杰出的；显著的；未完成的”；obvious“明显的”。由句中关键词“about his chances of winning a gold medal对明年在奥运会上赢得金牌的可能性”的对应知“乐观的”符合语境，故A项正确。

2.B
【句意】据说握手的习俗起源于原始人伸出空手来表明他们没有隐藏的武器，从而被友好地处理。
【解析】形容词词义辨析。lethal“致命的，致死的”；concealed“隐藏的”；murderous“杀人的；凶残的；蓄意谋杀的”；secret“秘密的”。由句中关键词“held out empty hands to indicate that they had no...weapons伸出空手来表明他们没有……武器”的对应知“隐藏的”符合语境，故B项正确。

【每日译词参考答案】
1. As Lao Wang is advanced in years, he is not able to work as he would have liked to do.
2. I feel keenly that my ability falls short of my wishes.