Hardly a month goes by without ______ of another survey revealing new depths of scientific illiteracy among US citizens.
#7309
A
words
B
word
C
a word
D
the word
推荐题目
Mr. Li has ordered ___ for the school lab.
#7371
A
three equipments
B
three pieces of equipments
C
three pieces of equipment
D
three pieces equipment
My watch is under______, so they’ll repair it for free. 
#7263
A
protection
B
safety
C
guarantee
D
examination