光学显微镜是科学实验常用的仪器之一，同学们要学会显微镜的规范操作。下列操作中规范的是     (     )

每处错误仅涉及一个单词的增加、删除或修改。

①In addition, sometimes I am very clumsy and drop things or bump into furnitures.

②Pudong Development Zone is no longer that it used to be.

③The capital of Peru is Lima, that is in the north on the coast.

④But monitoring carefully, the snakes proved to be no trouble and all went according to plan.

⑤Would you like to introduce your new published book to us?

⑥They urged that the gym was kept open during the work time.

⑦I came up this book in an old bookstore several days ago.

⑧Mum can't have Peter stay up all night long.

⑨Just accept them for who they are, and give them encouragement to live as rich and full life as you do.

⑩Every time when I returned after an absence, I felt stupid because I was behind the others.

关公是“义”的化身。关公崇拜起源于荆州，寄寓着荆州人民对关羽的特殊感情，在他身上，我们看到了守土报国的________，也看到了治军安民的______；看到了扶危济困的_______，也看到了同生共死的________。

如图所示是某同学在探究“蚂蚁是否喜欢甜食”的实验设计．

材料用具：一截劈开的竹筒（长15cm）、一只蚂蚁、一杯浓糖水、一杯清水、一个放大镜、两支滴管

实验步骤：

①在竹筒的两端，分别用两支滴管各滴上一滴浓糖水和一滴清水，将一只蚂蚁等距离放在两滴水之间．（如图）

②用放大镜观察蚂蚁的觅食行为．

请根据以上实验设计回答下列问题：