在一段时间内每个受众接触同一广告的次数是广告的()
A.到达率
B.频率
C.持续性
D.总强度
参考答案:B
用所给词的适当形式填空。
1. I (be) born in Shanghai.
2. He enjoys (play) computer games.
3. Sandy (not like) listening to music.
4. Li Hua is a very good (swim).
5. Some dogs don't know how (have) fun.
6. Millie goes to the Reading Club (two) a week.
7. These are (they) bikes.
8. We cut out the eyes, the nose and the sharp (tooth)
9. Jim, (not be) late for class next time.
10. Whose English is (good的比较级), Tom's or Jack's?
关于高位腰椎间盘突出症描述正确的是
A.大腿前方放射痛明显
B.足背内侧感觉异常
C.股神经牵拉试验阳性
D.常出现马尾神经症状
E.CT或MRI一般可明确诊断