At times the balance in nature is ______，resulting in a number of possibly unforeseen effects.
#20601
A
troubled
B
confused
C
disturbed
D
puzzled
推荐题目
--- What do you think of the good news ? --- Wonderful !．It makes us ____．Most of us were ____about it and _____ looks appeared on their faces．
#19652
A
excited ; excited ; excited
B
exciting ; exciting ; exciting
C
excited ; excited ; exciting
D
exciting ; excited ; excited
After a month of training, he became __________ to the work as a high-speed train driver.
#17818
A
analytical
B
sensitive
C
artificial
D
equal
A new __________ bus service to Tianjin Airport started to operate two months ago.
#20640
A
normal
B
usual
C
regular
D
common
The necklace the woman bought is , because it is made of glass.
#19410
A
priceless
B
worthwhile
C
valuable
D
worthless
Gui zhou Province is a place with quantities of resources.
#19447
A
invisible
B
crystal clear
C
potential
D
rich