词汇。根据句意和首字母提示,写出单词。 1. Last night he went home a ______. 2. Look! Mary is carrying a basket f ______ of flowers. 3. I had great d________ doing the work. 4. That nurse is very p_______ with little children. 5. She left a m______ ago. 答案:1. alone 2. full 3. difficulty 4. popular 5. moment
在“探究液体的压强”的实验中,进行了如图所示的操作.
(1)为了顺利地完成该实验,除了图中画出的各种器材外,还需要用到________.
(2)比较图中代号为________的三个图,可以得到的结论是:在同一深度,液体向各个方向的压强相等.
(3)比较代号为________的两个图,可以知道:在深度相同的情况下,不同液体的压强还跟它的密度有关;液体的密度越大,压强越________.
(4)比较代号为________的三个图,可以知道:液体的压强随深度的增加而增大.