【单选题】分子式为C8H8O3的化合物具有下列1H NMR和13C NMR光谱。 推测该化合物的结构( )【图片】【图片】
【单选题】Passage One Culture shock is the term given to the feelings of surprise, confusion, and disorientation that many foreigners feel when they live or study abroad. Scientists have noted that everyone exp...
A.
Their taste has changed when they are away.
B.
They have got used to the foreign culture.
C.
They have become more critical than before.
D.
New problems have developed in their country.
【单选题】Everyone in our class is _________ to know he passed the exam. [ ]
【单选题】Passage One Culture shock is the term given to the feelings of surprise, confusion, and disorientation that many foreigners feel when they live or study abroad. Scientists have noted that everyone exp...
A.
They are pleased by all the new things.
B.
They are disappointed at what they see.
C.
They miss their family and friends at home.
D.
They cannot help feeling irritated or frustrated.
【单选题】She often gets ______ late.
【单选题】下列属性是用来设置背景图像是否及如何重复的是( )