Scientists are hoping for a _____ in the search for a cure for cancer.
#6618
A
breakthrough
B
break
C
deal
D
progress
推荐题目
Having lived in China for 8 years, Helen has a good ______ of both English and Chinese．
#6188
A
program
B
guidance
C
command
D
ability
In spite of the city’s crowded urban environment, opportunities for outdoor _______ are never lacking.
#5907
A
reception
B
reservation
C
recreation
D
regulation
Each of us is likely to develop a personal for certain types of entertainment.
#5646
A
comparison
B
possession
C
preference
D
advantage