the following pairs of sentences are exactly the same except for one word. you will hear either sentence (a) or (b). choose the one you hear.
在电磁感应现象中,正确的说法是:
花束制作要注意握把部分不应有刺或金属丝的断头,以防扎伤顾客的手。
研究交流电的意义
下列各项中,应当征收消费税的()
电感和电容串联的电路,在一段很长的时间内,其平均功率和什么参量有关系?
3. car crashes are the top (3) of american teenagers. 4. most of the crashes result from (4) driving. 5. not paying attention to the (5) . 6. jim jennings from the allstate insurance company says the number one cause of distracted-driving accidents is the (6) . 7. debbie pickford of allstate insurance says teens are especially at (7) from distracted driving. 8. and not just because they lack (8) on the roads. 9. she said teens don't really have fully (9) brains until they're twenty-five years old. 10. new legislation in congress proposes to require all (10) to have what is called a graduated driver licensing system.