At times the balance in nature is ______ , resulting in a number of possibly unforeseen effects. 
#84042
A
troubled
B
confused
C
disturbed
D
puzzled
推荐题目
People who have _______ flood often say that’s _______ . 
#68929
A
experienced; terrifying experience
B
experimented; terrifying experience
C
experienced; a terrifying experience
D
experimented; a terrifying experience
 He took off his coat, _____ all his pockets, but couldn’t find his key.
#80272
A
searched
B
searching
C
to search
D
searches
. She_____ Japanese when she went to Japan for holiday. Now she can speak it freely.
#76280
A
picked up   
B
turned up  
C
made up   
D
took up