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【简答题】
A．He doesn't know much about jazz. B．He likes jazz better than the country music. C．He thinks jazz is as enjoyable as country music. D．He thinks country music is better than jazz.
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反馈参考答案：
举一反三
【单选题】下列说法不正确的是
A.
化学键是使离子或原子相结合的作用力
B.
气态单质分子中不一定存在化学键
C.
NaCl与NaOH固体中的化学键类型完全相同
D.
碳原子最外层有4个电子，能与其他原子形成4个共价键
【单选题】Twenty____________ been brought in by villagers.
A.
cattle has
B.
cattles have
C.
cattle have
D.
heads of cattles have
【单选题】( )the villagers here prefer to --- in the cold, which impressed me most.
A.
work on
B.
work at
C.
work for
D.
work out
【单选题】It is wise to put milk on a shelf close to the bottom because it is especially _______ to temperature changes
A.
flexible
B.
fundamental
C.
sensitive
D.
positive
【单选题】In order to find the missing child, the villagers___________ all they can in the past five hours.
A.
have been doing
B.
did
C.
do
D.
had done
【简答题】在NaCl、NH 4 Cl、Na 2 O 2 、CH 2 =CH 2 、H 2 、CO 2 几种物质中，只存在离子键的为（），只存在非极性键的是（），既有极性键又有非极性键的为（）。
【单选题】An isotherm is ______.
A.
a line on a weather map connecting equal points of both temperature and pressure
B.
an instrument that measures the climatological effects of temperature
C.
a line connecting points of equal barometric pressure on a weather map
D.
a line connecting points of equal temperature on a weather map
【简答题】Because of the heavy snow, some villagers in the mountain area are in ________ . (er , erous)
【简答题】( ) 3. The soldiers soon reached ______ was once an old temple ______ the villagers used as a school.A. which; where B. what; which C. where; which D. what; where
【单选题】下列关于化学键的说法正确的是： ①HF是一种非常稳定的化合物，这是因为分子间存在氢键 ②NaCl熔化离子键发生了破坏 ③CO 2 、SiO 2 熔点后者高是因为前者克服分子间作用力后者熔化破坏共价键 ④活泼金属与非金属化合时，一定能形成离子键 ⑤离子化合物中可能同时含有离子键和共价键 ⑥由非金属元素形成的化合物一定不是离子化合物 ⑦单质分子中一定含非极性键
A.
①②⑤
B.
④⑥⑦
C.
①③④
D.
②③⑤
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