党的地方各级代表大会和基层代表大会的选举，如果发生违反 * * 的情况，上一级党的委员会在

一声音在空气中的波长为40 m，传播速度为340 m/s，当声波传入另一种介质中时，波长变为60 m，则它在这种介质中传播速度为__________ m/s。

铜及其合金是人类最早使用的金属材料．

（1）铜原子的核外电子排布式是______．

（2）如图是金属Ca和Cu所形成的某种合金的晶胞结构示意图，则该合金中Ca和Cu的原子个数比为______．   

（3）Cu²⁺能与NH₃、H₂O、Cl^-等形成配位数为4的配合物．

①[Cu（NH₃）₄]²⁺中存在的化学键类型有______（填序号）．

A、配位键            B、金属键

C、极性共价键        D、非极性共价键   E、离子键

②[Cu（NH₃）₄]²⁺具有对称的空间构型，[Cu（NH₃）₄]²⁺中的两个NH₃被两个Cl^-取代，能得到两种不同结构的产物，则[Cu（NH₃）₄]²⁺的空间构型为______．

③某种含Cu²⁺的化合物可催化丙烯醇制备丙醛的反应：HOCH₂CH=CH₂CH₃CH₂CHO，在丙烯醇分子中共有______σ键和______π键．

A powerful earthquake struck the northeastern coast of Japan at two forty-six p.m. local time on March eleventh.2011. Japan's Meteorological Agency released its first tsunami（海啸） warnings just three minutes later. The country has one of the best earthquake early warning systems in the world.

There are more than four thousand Seismic Intensity Meters in place throughout Japan to measure earthquake activity. These meters provide information within two minutes of an earthquake happening. Information about the strength and the center of the earthquake can be learned within three minutes.

There are also concrete(混凝土) sea walls around much of the Japanese coastline. But these measures proved no match for the powerful earthquake and tsunami.

Costas Synolakis ，a tsunami expert at the University of Southern California in Los Angeles said，"Japan is one of those most well-prepared countries on earth in terms of tsunami warning. They had a warning. I think what went wrong is that they had not expected the size of this event."

He says there are two reasons for this. Japan has not had any event anywhere near as big as this one in the last one hundred fifty years. And scientists had not expected such a large earthquake happening off the coast of Japan.

The nine point zero magnitude earthquake was the fourth most powerful earthquake ever recorded worldwide. It was also the worst earthquake ever to hit Japan. The tsunami waves that followed were reported to have reached as high as thirteen meters in some areas.

Costas Synolakis says Japan's concrete sea walls were not built to handle such high waves.

Experts say early warning systems will continue to be limited by these facts until earthquakes and tsunamis can be predicted

小题1:Where can this passage probably be adapted from?

A．A magazine on science

B．A fairy Tale

C．A scientific fantasy book

D．A newspaper小题2:Which of the following statements NOT true ?

A．A terrible earthquake hit the northeastern coast of Japan

B．It was also the worst earthquake in Japan

C．The 9.0 earthquake was the fourth most powerful earthquake ever recorded in Japan

D．Japan's concrete sea walls was unable to handle such high waves.小题3:According to Costas Synolakis, why did Japan suffer such a loss?

A．The country has never experienced any event as big as this one over the past 150 years

B．Japan has the best earthquake early warning systems in the world.

C．There are not concrete sea walls around all of the Japanese coastline

D．The government didn’t announce its first tsunami warnings three minutes earlier.

下列关于地震自救表述不正确的是( )。

A．为防止次生灾害的发生，首先要切断电源、气源，防止火灾发生
B．应疏散到高大建筑物、窄小胡同、陡山坡及河岸边
C．在家中要就地避险，可选择较安全的地方(如床下、桌子底下)躲避
D．住单元楼内，可选择开间小的卫生间、厨房、储藏室及墙角躲避

为使减压回路可靠的工作，其最高调整压力应比系统压力（）。

A.低一定数值

B.高一定数值

C.相等