1. He usually ______his emotions and appears calm.
A. holds up
B. holds back
C. holds on
D. holds tight
2. Because of ______ weather conditions, more than a dozen states in the US were declared disaster areas last year
A. moist
B. harsh
C. bizarre
D. impossible
【考博英语补全句子】
1. Those who _______ _______ ______(被困在)the mine needed to be rescued.
2. _______ _______ twenty people _______ ________ in the accident. (20多人在事故中受伤。) 1.B
【句意】他通常会抑制自己的情绪，进而显得镇静。
【解析】词组辨析。hold up“举起;阻拦;拦截”;hold back“隐瞒;退缩;抑制;阻止”;hold on“不挂断电话;等一下;继续”;hold tight“抓紧”。由句中关键词“emotions情绪”与“and appears calm进而显得镇静”的对应可推知“抑制”符合语境，故B项正确。
2.B
【句意】因为恶劣的天气状况，美国去年有超过12个州被宣布为灾区。
【解析】形容词词义辨析。moist“潮湿的”;harsh“严厉的;严酷的;刺耳的;粗糙的;恶劣的”;bizarre“奇异的;古怪的”;impossible“不可能的;难以忍受的”。由句中关键词“weather conditions天气状况”与“were declared disaster areas被宣布为灾区”的对应知“恶劣的”符合语境，故B项正确。
【补全句子参考答案】
1. 句意：那些被困在矿井里的人需要被解救出来。
答案：were trapped in
2. 答案：More than, were injured