托盘天平是实验室里常用的测量工具，根据你对天平的了解，请你列举托盘天平的几个缺点

缺词填空。 根据短文内容及首字母提示，补全空格内单词，使短文完整、通顺。

     Have you ever wanted to find a new world, make new friends and have an adventure? Well, (1) f_______

Alice to Wonderland and you'll find everything you need.

     Alice in Wonderland, a new Disney movie, opened in Chinese cinemas on March 26. It's based on English

writer Lewis Carroll's beloved 1865 story Alice's Adventures in Wonderland.

     In the movie, Alice grows up. She is 19 years old. One day, she goes to a party and learns that a rich man

wants to (2) m_______ her. She doesn't like him, so she follows the White Rabbit and (3) r_______ away.

She falls (4) i_______ a deep hole and arrives at Wonderland, a place she (5) v_______ many years before.

    Alice has no idea why she is in Wonderland. She can't (6)r_______ anything about her last visit. The

White Rabbit tells her that Wonderland is (7) u_______ control of the evil (邪恶的) Red Queen. And Alice is

the (8) o_______ one who can save Wonderland!

    Will Alice be (9) a_______ to do it? Go to the (10) t_______ and see the movie. The new movie mixes live

action and 3D technology to create beautiful and exciting scenes. What's more, you will go on an adventure

of self-discovery with Alice and her Wonderland friends.

一个正方体的棱长总和是48dm，它的棱长是______dm，体积是______dm³．

通常分布在根分叉区及根尖区的是（）

A.无细胞无纤维牙骨质

B.无细胞外源性纤维牙骨质

C.有细胞固有纤维牙骨质

D.无细胞固有纤维牙骨质

E.有细胞混合性分层牙骨质

从动件的运动规律决定了凸轮的（）。

A.轮廓曲线

B.转速

C.形状

D.位置

自助银行清机与加钞，必须做到（）

A.双人操作

B.武装守护

C.及时清点

D.交叉复核