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举一反三
【单选题】Which of the followings is NOT the topic of the meetings between the two presidents?
A.
Nuclear weapons.
B.
Terrorism.
C.
Illegal drugs.
【单选题】Choose the option which is not the benefit of studying abroad according to the two readings.
A.
It is acompletely different style of learning, and very much focused on class participation.
B.
The diversityof the student body.
C.
The chance to explore the host country or continent.
D.
High costs of the tuition and the living expenses.
【单选题】下列有关 的说法中不正确的是 [ ]
A.
该有机物能发生水解反应
B.
该有机物的化学式为C 19 H 18 N 3 O 2
C.
该有机物不能发生消去反应
D.
该有机物既能与溴水反应，又能与碳酸钠溶液反应
【单选题】下列有关 的说法中不正确的是
A.
该有机物能发生水解反应
B.
该有机物的化学式为C 21 H 20 N 3 O 4
C.
该有机物不能发生消去反应
D.
该有机物既能与溴水反应，又能与碳酸钠溶液反应
【单选题】下列有机物中，在不同条件下，既能发生水解反应和消去反应，又能发生酯化反应并能与金属钠反应放出氢气的是( )
A.
只有②
B.
只有①②
C.
只有②③
D.
只有①②③
【单选题】Which is not true about the two families in the text?
A.
They are all very poor.
B.
Each family has four kids.
C.
They live in two cottages.
D.
They often fight with each other.
【单选题】Which of the following is NOT the celebration of the two special days?
A.
Wearing carnations.
B.
Cleaning parents' house.
C.
Visiting the cemetery.
D.
Gathering at home.
【单选题】下列有机物中，不能发生水解的是 A.CH 3 COOCH 3 B. CH 3 CONH 2 C. CH 3 COOH D.A、B、C均不能
A.
CH 3 COOCH 3
B.
CH 3 CONH 2
C.
CH 3 COOH
D.
A、B、C均不能
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