化学兴趣小组要在实验室中配制一定溶质质量分数的氯化钠溶液．

（1）甲图中缺少一种必须用到的玻璃仪器是____ （填写名称），其作是____ ．

（2）在用量筒量取蒸馏水时，读数时视线应该____ ．

（3）准确称量氯化钠18g，量取蒸馏水的体积如乙图所示，完全溶解后所得溶液中溶质质量分数是____ ．（水的密度为1g•cm^﹣3）

（4）若他们在量取溶剂时，俯视量筒读数，会导致所配的溶液溶质质量分数____ ．（填“增大”“减少”或“不变”）

下面句子中，没有语病的一项是（   ）

若不等式组$\left\{\begin{array}{c}x+8<4x-1\\ x>m\end{array}\right.$的解集是x＞3，则m的取值范围是（       ）

    Long, long ago, a donkey(驴) fell in a dry well. The animal cried for hours as the farmer tried to think out what to do. Finally, the farmer thought the animal was too old and the well needed to be covered(覆盖) up anyway, so he decided not to try to save the donkey.

    The farmer invited his neighbours(邻居) to help him. They began to shovel(铲) dirt into the well. The donkey cried harder. Then a few shovelful later, he became quiet. The farmer looked into the well, and was surprised by what he saw.

    While every shovelful of dirt hit his back, the donkey would shake (抖) it off and take a step on the new layer(层) of dirt. As the farmer's neighbours continued(继续) to shovel dirt on top of the animal, the donkey would shake it off and take another step up.

    Soon the donkey stepped up out the well and ran away, to the surprise of all the neighbours

    The lesson we get from this story is that life shovels some dirt on us, we must get out of the well and not let it cover us. We must learn to shake it off and take a step up. Each of our trouble is a stepping-stone (踏脚石). We can get out of the deepest well by never giving up!