The proposal deserves support as it gives ______ to the needs of children.
A. curiosity
B. awareness
C. priority
D. emphasis
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We have to wait for the bus, ______？
A. have we
B. haven ’t we
C. do we
D. don ’t we
脑膜瘤主要CT表现有哪些（）
A. 圆形或类圆形
B. 等密度
C. 脑膜尾症
D. 均匀强化
E. 以上都是
I know my limitations, so I won ’t do anything ______ my ability.
A. beyond
B. under
C. above
D. below
当震动频率超过（）以上，便形成噪声传进人的耳朵。
A. 30Hz
B. 40Hz
C. 50Hz
D. 60Hz
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