A:don't play
B:to not play
C:not to play
下列诗句中,描述气候的是( )
下列各项中,属于食物链的是( )
(____)(1)A. first B.second C. three
(____)(2)A. classroom B.play C. playground
(____)(3)A. heavy B. high C. school
(____)(4)A. on B.in C. me
(____)(5)A.floor B. push C. swing
按角的不同可以把三角形分为____角形,____三角形和____三角形.