选择正确的搭配
①What can you do?____ I like jelly.
②What do you need?____ I can fly a kite.
③What do you like? ____ I need a blouse.
④What do you see?____ I hear a pig.
⑤What do you hear? ____ I see a sheep.
某小组同学将调查涉及到的生物进行分类,他们将月季、梧桐、含羞草、白菜、桂花树归为一类,而将瓢虫、蜜蜂、蜘蛛、猫、狗归为另一类.他们的归类依据是( )
家是我们( )
①成长的摇篮 ②栖息的场所 ③安全的港湾 ④心灵的归宿
如图,函数f(x)的图象为折线ACB,则不等式f(x)≥log2(x+1)的解集是( )
下列有关粗盐提纯的实验操作不正确的是( )