单选题 The first and smallest unit that can be discussed in relation to language is the word. In speaking, the choice of words is (21) the utmost importance. Proper selection will eliminate one source of (22) breakdown in the communication cycle. Too often, careless use of words (23) a meeting of the minds of the speaker and listener. The words used by the speaker may (24) unfavorable reactions in the listener (25) interfere with his comprehension; hence, the transmission-reception system breaks down.
(26) , inaccurate or indefinite words may make (27) difficult for the listener to understand the (28) which is being transmitted to him. The speaker who does not have specific words in his working vocabulary may be (29) to explain or describe in a (30) that can be understood by his listeners.

单选题 A. of B. at C. for D. on
【正确答案】 A
【答案解析】习惯搭配。be of+名词结构相当于形容词用法,表示具有某种性质、状况。be of the utmost importance相当于be the most important。
单选题 A. inaccessible B. timely C. likely D. invalid
【正确答案】 C
【答案解析】根据上下文,likely“可能的”,在此作定语修饰breakdown合乎句意;inaccessible“达不到的,不易接近的”;timely“及时的,适时的”;invalid“无效的”。
单选题 A. encourages B. prevents C. destroys D. offers
【正确答案】 B
【答案解析】根据上下文,选词不当会造成交流中断,因此prevent“妨碍,阻止”合乎句意。encourage“鼓励”、offer“提供”与段意相反;destroy“毁灭”在此程度太重,不符逻辑。
单选题 A. pass out B. take away C. back up D. stir up
【正确答案】 D
【答案解析】根据句意stir up“引起、激起”为正确选项。pass out带宾语时为“分发”;take away“拿走”;back up“支持”。
单选题 A. who B. as C. which D. what
【正确答案】 C
【答案解析】此空格后为动词短语,只有通过关系代词作主语,才能使其后成为完整的定语从句。因此,根据句意,which修饰unfavorable reactions,意为“不悦的反应会影响听者的理解力”。what为连接代词,不需要先行词;as可作关系代词引导非限定性定语从句,其先行词常为主句的全部或后面部分。who虽然可引导定语从句,其先行词为listener,与后面的动词搭配不一致,因此不能选。
单选题 A. Moreover B. However C. Preliminarily D. Unexpectedly
【正确答案】 A
【答案解析】此处表示递进关系,Moreover“此外,而且”符合句意。However表示转折“然而”;Preliminarily“起初的”;Unexpectedly“意外的”。
单选题 A. that B. it C. so D. this
【正确答案】 B
【答案解析】it的用法。在此it作形式宾语,替代形容词后的不定式短语。make+it+adj.for sb. +to do sth. 是一种常见句型。
单选题 A. speech B. sense C. message D. meaning
【正确答案】 C
【答案解析】此空格须能够接受其后定语从句的修饰,作transmit“传递,传送”的宾语,transmit message(传递信息)是惯用搭配。其他均不符句意。
单选题 A. obscure B. difficult C. impossible D. unable
【正确答案】 D
【答案解析】此题主语为speaker,且受定语从句的限定,unable“不能的,不会的”,符合句意。指人时,obscure“默默无闻的”;difficult“不易相处的”;impossible“无法忍受的”,不符句意。
单选题 A. case B. means C. method D. way
【正确答案】 D
【答案解析】way与in连用,表示“以……方式/手段”,作方式状语。case“境况,状况”与in连用,in case of意为“假如,免得”;means“方法,手段”一般与by连用;method“方法”常与by/with连用。