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【单选题】
苯容易发生亲电取代反应,当苯环上连接−SO3H,−CH3,−COOH等基团时, 苯环亲电取代反应活性发生变化。−SO3H,−NO2,−CH3,−COOH等四种基团中,能使苯环亲电取代反应活性增强的是:( )A.
−SO3H
B.
−NO2
C.
−CH3
D.
–COOH
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【单选题】听力原文： Italy's capital Rome is a famous tourist attraction, but there are swarms of birds that crowd in Rome's historic public squares and churches every winter, forcing tourists and passers-by to seek...
A.
Begging food from the tourists.
B.
Attacking the tourists.
C.
Dropping wastes on the tourists.
D.
Making loud noise to disturb the tourists.
【单选题】The visitors will ______.
A.
visit most famous tourist attractions of China
B.
learn a lot about the past and present of China
C.
have a deep impression of China's past, present and future
D.
have a hard trip throughout China
【单选题】Qiandao Lake, widely known ______ a tourist site, is famous _____ its clear and drinkable water.
A.
as; to
B.
for; as
C.
for; to
D.
as; for
【单选题】听力原文： Italy's capital Rome is a famous tourist attraction, hut there are swarms of birds that crowd in Rome's historic public squares and churches every winter, reining tourists and passers-by to seek...
A.
Begging food from the tourists.
B.
Attacking the tourists.
C.
Dropping wastes on the tourists.
D.
Making loud noise to disturb the tourists.
【单选题】a heavy branch falling from a tree to the ground
A.
Whimper
B.
rattle
C.
jingle
D.
mute
E.
thud
【单选题】It’s surprise that the faraway village has been ______into a famous tourist city in only ten years.
A.
divided
B.
transformed
C.
made
D.
broken
【单选题】听力原文： Italy's capital Rome is a famous tourist attraction, but there are swarms of birds that crowd in Rome's historic public squares and churches every winter, forcing tourists and passers-by to seek...
A.
Begging food from the tourists.
B.
Attacking the tourists.
C.
Dropping wastes on the tourists.
D.
Making loud noise to disturb the tourists.
【单选题】"平静呼吸时,关于呼吸肌的活动,哪项是错误的?
A.
吸气时,肋间外肌收缩
B.
吸气时,肋间内肌收缩
C.
吸气时,膈肌收缩
D.
呼气时肋间外肌舒张
E.
呼气时,膈肌舒张"
【简答题】电视剧《过把瘾》改编自谁的小说?
相关题目：
【单选题】a heavy branch falling from a tree to the ground
A.
Whimper
B.
rattle
C.
jingle
D.
mute
E.
thud
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