⑴____ A. mine B. live C. white D. Mike
⑵____ A. milk B. kite C. finish D. give
⑶____ A. this B. sign C. with D. little
⑷____ A. sorry B. note C. home D. cold
⑸____ A. hobby B. piano C. over D. comb
—____ (receive) a gift from his boss.
若θ是△△ABC的一个内角,且sinθcosθ=-18,则sinθ-cosθ的值为( )
已知2x=3,2y=5.求:
(1)2x+y的值;
(2)23x的值;
(3)22x+y﹣1的值.
①我国居民消费水平不断提高 ②我国经济增长出现了新动能
③消费量的增加带来了产品质量的提高 ④生产方式决定消费的方式