【名词&注释】
有机物(organic compounds)、有机化学(organic chemistry)、乙酸乙酯(ethyl acetate)、氢氧化钠(sodium hydroxide)、化学变化(chemical change)、加成反应(addition reaction)、吐故纳新(air refreshing)、物理变化(physical change)、独树一帜(his unique)、刚正不阿
[单选题]下列词语中加点的字，每对读音都不相同的一组是（ ）（原创）
A. 对峙/有恃无恐 机杼/毁家纾难 阿谀/刚正不阿
B. 伉俪/引吭高歌 炽热/独树一帜(his unique) 呕吐/吐故纳新(air refreshing)
C. 儒生/相濡以沫 偌大/一诺千金 暴露/泄露天机
D. 宵禁/不屑一顾 教诲/风雨如晦 横财/横行霸道
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举一反三：
[单选题]第二节（共5小题，每小题2分，满分10分）根据短文内容，从下框的A~F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项。
A. A Gift giving proven to be valuable.
B. Memories from gift giving
C. Moments and events for gift giving
D. Various functions of gift giving
E. Gitt giving as a wasteful practice
F. F.Gift giving as a two-way social activity
G. Gift Giving
H. 61.
I. There are many occasions（场合） for giving gifts in modern industrialinzed societies;birthdays,naming ceremonies, weddings, anniversaries, New Year, It is common to give gifts on many of these celebrations in western cultures. In addition, special events, such as one’ s first day of school or graduation from university, often require gift fiving.
[单选题]
A. trade
B. deed
C. challenge
D. incident
[单选题]下列关于有机物的正确说法是
A. 聚乙烯可发生加成反应
B. 石油干馏可得到汽油、，煤油等
C. 淀粉、蛋白质完全水解的产物互为同分异构体
D. 乙酸乙酯、油脂与NaOH溶液反应均有醇生成。
[单选题]______________________________________________________________________A dictionary entry has many elements: multiple definitions, syllabication, preferred spelling and pronunciation (some words have more than one acceptable spelling and pronunciation), and part-of-speech labels. Some entries also include plurals and capitalized forms, synonyms, antonyms, and derivatives. Americanisms and etymologies may be provided along with usage notes, cross-references, and idioms.
A. Varieties of college dictionaries
B. Accessing dictionaries electronically
C. Elements under a word item
D. Complete editions of dictionaries
E. Using dictionaries for particular fields
F. F. Features of college dictionaries
[单选题]If you want to have someone wake you up in the morning, you may call.
A. 800-5224
B. 800-5770
C. 800-7839
D. 800-0760
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