在台虎钳上錾切板料，錾切线要与钳口夹平齐，且夹牢固。( )
参考答案：对
— What _ you like a New Year's present?
— _ a yo-yo. [ ]
A. do; as; I'd like
B. would; as; I'd like
C. do; for; I'd like to
D. would; as; I'd like to
维生素D缺乏病的预防应强调（）
A.合理喂养
B.经常晒太阳
C.经常口服钙片
D.经常口服鱼肝油
E.母亲孕期与哺乳期的保健
