最紧密堆积的晶体结构有两种：一种______，每个晶胞中有______个_爱下问搜题

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问题填空题

最紧密堆积的晶体结构有两种：一种______，每个晶胞中有______个原子；另一种是______，每个晶胞中有______个原子。

答案

参考答案：ABC；4；AB；2(或6)

单项选择题 A1型题

先天性梅毒患儿的临床表现包括（）

A.皮肤损害、肝脾肿大

B.皮肤损害、脑钙化

C.肝脾肿大、脑钙化

D.骨损害、脑钙化

E.贫血、血小板减少、脑钙化

完形填空

Towards the end of the baseball game, a controversial call was given. At full speed Paul Harvey slid home（本垒）and, thinking he had just ___36___ a game-changing run, he stood up only to face the words, “You’re ___37___!”
Angry, he threw off his helmet and ran over to explain to the ___38___ why the call was wrong. Before his ___39___ really got out of control, someone pulled him away, and he walked to the bench---___40___.
Long after the coaches, players, and fans had gone home, he realized the impact of his ___41___. Like most of us do when we are faced with the __42___ of our actions, he could have just let it go, reasoning, “Everybody ___43___ it.”
However, in the silence of his heart, he knew that just ___44___ everyone else does it, that doesn’t make it all right. And so, long after his friends had gone home, he ___45___ that coach back up to the school—not to ___46___ his car. No, the boy tracked this man down so he could tell him face to face, “I’m sorry, Sir. It was all my___47___.”
It takes true courage to stand up to face the ___48___ we all make and say, “I was wrong. I’m sorry.” What makes this ___49___ unique is that it wasn’t meant for the world to ___50___, it was meant simply as a way to stay ___51___ to his own heart.
The truth is at one time or another we have all been this boy --- ___52___ out in anger, saying hurtful things, and feeling ___53___ for doing so. But the real test comes later when we are ___54___ with the choice to say “sorry” or to walk away thinking, “Ah, they’ll get over it.”
Maybe the “they” is a customer, a friend, or a child. Whoever it is, don’t pass up the opportunity to get right with your own heart. The time for apology is now! Courage is a ___55___ of the heart.

D．disappointed

A．explanation

C．performance

A．satisfaction

C．embarrassment

A．accompanied

D．carelessness

B．impoliteness

C．announcement

B．description