【单选题】由主标题和副标题共同构成的报告标题是( )
【简答题】比较下列离去基团离去能力的大小:( )>( )>( )>( )。 (A)RO - (B)ROO - (C)Cl - (D)
【单选题】When the native guide said 'Kang-a-roo ', he really meant'______'
A.
Ah, it is a special kind of animal.
B.
I wonder what you have said.
C.
What do you mean by pointing at that animal?
D.
I have no idea of what you are referring to.
【单选题】The roo ________ is very clean.
【单选题】In what sense was Toby 'safe'?
A.
The overhanging rock would protect him from falling rocks.
B.
He felt a hand on his shoulder.
C.
His rucksack was protected.
D.
He had hidden under a canopy.
【单选题】The guests left, a lot of wastes in the room. .