【多选题】硅酸盐晶体的结构的基本特点()。
A.
硅酸盐的基本结构单元是[SiO 4 ]四面体,硅原子位于氧原子四面体的间隙中
B.
每个氧最多只能被两个[SiO4]四面体共有;
C.
[SiO 4 ]四面体可以互相孤立地在结构中存在,也可以通过共棱互相连接;
【简答题】I’m going to graduate from my school soon, but I’ll ____it forever此题出自2015年山东青岛中考英语真题及答案,2015年山东青岛初中学生学业考试英语试题 I’m going to graduate from my school soon, but I’ll ____it forever. A. be friends with B....
【简答题】万向节的形式按其()分两种,一种是等速万向节,一种是不等速万向节。
【单选题】—Hurry up! We ________ for you at the gate. —I’m sorry .I’m coming soon.学科
A.
—Hurry up! We ________ for you at the gate. —I’m sorry .I’m coming soon. A. waits
【单选题】------______, is the seat free? ------______, it’s taken. My friend will be back soon.
A.
I’m sorry; I apologize
B.
I beg your pardon; I’m afraid
C.
Good morning; Oh, that’s right.
【单选题】听力原文:M: I'm terribly sorry I'm late, but I just couldn't help it. I got here as soon as I could. W: Well, it's not soon enough, is it? Q: What does the woman mean? (16)
A.
It's soon enough to get here.
B.
It's not soon enough to get here.
C.
It's not late to get here.
D.
It's early enough to get here.
【单选题】As it will soon be Christmas, I'm ______ to get the television repaired as quickly as possible.
【单选题】以下选项中关于无机化合物结构的描述,错误的一项是()
A.
构成硅酸盐晶体的基本结构单元是 [SiO4] 四面体
B.
[AlO4] 四面体的每个顶点,即 O2- 离子最多只能为两个 [AlO4] 四面体所共用
C.
两个相邻的 [SiO4] 四面体之间只能共顶而不能共棱或共面连接
D.
[SiO4] 四面体中心的 Si4+ 离子可部分地被 Al3+ 所取代,取代量通常不超过一半
【单选题】There will be _______ soon. I’m afraid I can’t go.
【简答题】I ’ m g oing to run for the bus as soon as the bell rings.英译汉