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【简答题】
W、X、Y、Z、N是短周期元素，它们的核电核数依次增大。 （1）W单质的化学式为__________ ，Z元素原子核外有__________个原子轨道填充了电子。 （2）W和X形成的化合物中的共价键按原子轨道的重叠方式属于____________键。 （3）Y、Z和N三种元素第一电离能由大到小的顺序为__________（填元素符号）。 （4）Z和X形成的化合物构成的晶体属于___________晶体。 （5）Y晶体的堆积下图所示，晶胞中Y原子的配位数为___________。 （6）不用电解Y与N熔融化合物的方法生产Y单质的原因是_____________。
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【单选题】It looked like rain last night, but it turned ______a fine day. [ ]
A.
out
B.
off
C.
down
D.
up
【多选题】黑板报、小广播等传统媒体的宣传要求包括（）。
A.
及时有效地宣传保卫工作的方针政策
B.
传播科学文化知识
C.
介绍保卫工作信息
D.
介绍单位治安形势，表彰先进，揭露问题
E.
及时介绍治安形势和政策
【单选题】Though it looked like rain this morning, it has ________ a fine day.
A.
ended
B.
found out
C.
resulted in
D.
turned out
【简答题】What did time smell like? like dust and clocks and people. And if you wondered what time sounded like it sounded like water running in a dark cave, and ---crying and dirt ---down upon hollow box lists...
【单选题】It looked like rain. __________, it is clear this morning.
A.
While
B.
But
C.
However
D.
So
【单选题】They had the party outside ______ it looked like rain.
A.
even though
B.
regardless of
【简答题】It looked like rain. The 1 was gray. It was almost noon, but the sun was hidden by a gray blanket. It was cool. There were no birds 2 anywhere. A 3 of birds sat on the telephone wire. Bob was standing...
【单选题】______ it looked like rain this morning, it has turned out a fine day.
A.
If
B.
Because
C.
Though
D.
As
相关题目：
【单选题】It looked like rain last night, but it turned ______a fine day. [ ]
A.
out
B.
off
C.
down
D.
up
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知识点：
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