3=____×____
A. B. C. D.
E. F. G. H.
⑴on the box ____
⑵go fishing ____
⑶go swimming ____
⑷play table tennis ____
⑸fly kites ____
⑹in the box ____
⑺under the tree ____
⑻in the lake ____
生活中一些物质的pH如下图所示,其中碱性最强的是( )
则____ 狼____ 悔____ 盘____ 硬____
刚____ 浪____ 海____ 船____ 更____