若的图象按象量a平移得到的图象,则向量a等于( )A. B. C. D. 答案:B
选出不同类别的词。
( ) 1. A. need ( ) 2. A. when ( ) 3. A. hope ( ) 4. A. sweet ( ) 5. A. always
B. can B. what B. at B. sour B. usually
C. must C. work C. on C. taste C. sometimes
D. check D. which D. in D. interesting D. relax