【单选题】
John dug ( ) studying physics after the failure of the exam.
【单选题】
In the late nineteenth century physicists started to ( ) out.
【单选题】
It was the information that she collected there ( ) gave her great help.
【单选题】
The province ( ) about 1/10 of the countrys total area and population.
【单选题】
( ), Mary served as a visiting professor at several American universities.
【单选题】
Its on No.21 bus ( ) I came across my ffirst English teacher yesterday.
【单选题】
That’s irresponsible to customers because we are ( ) off our own power supply.
【单选题】
We must ( ) the express items arrives in time.
【单选题】
Everything they knew about Newtonian physics was suspiciously letting them ( ).
【单选题】
The ( ) difficulties of the country will not diminish unless inexpensice fertilisers can be widely distributed.