Due to the widespread ______ of this medical technology, more diseases can be discovered and treated at an early stage.
A. presentation B. appreciation C．qualification D．application
The fog was so heavy this morning that drivers could hardly _______ the things just ten m
eters away from them.
A. figure out B. look out C. make out D. try out
________ the meeting himself gave them a great deal of encouragement.
A. The president will attend B. The president to attend
C. That the president attended D. The president attending
Not far from the club, there is a garden, its owner ________ in it ________ bridge with his children every afternoon.
A. seated; plays B. seats; plays C. seated; playing D. seating; playing
— Sorry, I'm afraid the project will be delayed. Time is so limited!
— Take it easy. You will have two assistants ______.
A. at your command B. at your expense
C. at your convenience D. at your sacrifice
_____ of their bad habits, 
the boys switched from being dependent on their parents to _____ for others.
A. Having rid; sacrificing B. To rid; sacrifice
C. Rid; sacrificing D. Having been rid; sacrifice
