A:are growing
B:have grown
C:will grow
D:had grown
按要求写出单词(1)often (比较级)____ (2)own (名词)____ (3)how about (同义词组)____ (4)success(形容词)____ (5)late (比较级)____ (6)fail (反义词)____ (7)ugly (反义词)____ (8)design (名词)____ (9)choose (过去分词)____ (10)important (名词)____
请选出下列说法正确的一项( )
如图,直线a、b被直线c所截,若a∥b,∠1=40°,则∠2的度数为 ( )
He is a _____ boy, so he can't go to the park by himself.
已知函数fx=sin2x+π3,若存在a∈0,π,使得fx+2a=fx恒成立,则a的值是( )