某放射性元素的原子钬67166Ho,可有效地治疗肝癌.该同位素原子核内中子数为(

题型:选择题

问题:

某放射性元素的原子钬67166Ho,可有效地治疗肝癌.该同位素原子核内中子数为(  )

A.32

B.67

C.99

D.166

考点:原子核的组成及组成粒子间的关系
题型:选择题

阅读理解。

     Years ago, I lived in a building in a large city. The next building only was a few feet away from mine.

They was a woman lived there, and I had never met her, yet I could see she sat by her window each

afternoon, sewing or reading.

     After several months had gone by, I began to notice that her window was dirty. Everything was unclear

through the dirty window. I would say to myself. "I wonder why that woman doesn't wash her window. It

really looks terrible."

     One bright morning I decided to clean my flat, including washing the window on the inside.

     Late in the afternoon when I finished the cleaning, I sat down by the window with a cup of coffee for a

rest. What a surprise! Across the way, the woman sitting by her window was clearly visible (看见). Her

window was clean!

     Then it dawned on me. I had been criticizing (批评) her dirty window, but all the time I was watching

hers through my own dirty window.

     That was quite an important lesson for me. How often had I looked at and criticized others through the

dirty window of my heart, through my own shortcomings?

     Since then, whenever I wanted to judge (评判) someone, I asked myself first, "Am I looking at him

through my own dirty window?" I try to clean the window of my own world so that I may see the world

about me more clearly.

1. The writer couldn't see everything clearly through the window because _________.

A. the woman's window was dirty

B. the writer's window was dirty

C. the woman lived nearby

D. the writer was near-sighted

2. The writer was surprised that _________.

A. the woman was sitting by her window

B. the woman's window was still terrible

C. the woman did cleaning in the afternoon

D. the woman's window was clean

3. "It dawned on me" probably means "_________".

A. I began to understand it

B. it cheered me up

C. I knew it grew light

D. it began to get dark

4. It's clear that _________.

A. the writer had never met the woman before

B. the writer often washed the window

C. they both worked as cleaners

D. they lived in a small town

5. From the passage, we can learn _________.

A. one shouldn't criticize others very often

B. one should often make his windows clean

C. one must judge himself before he judges others

D. one must look at others through his dirty windows

题型:选择题

The old couple decided to ______ a boy and a girl though they had three of their own.

A.adapt

B.bring

C.receive

D.adopt

题型:选择题

报纸最短按()收订为整订。

A、月

B、季

C、半年

D、年

题型:选择题

某男,32岁。双下肢挤压伤,神志尚清楚,表情淡漠,明显口渴,面色苍白,皮肤湿冷,脉搏112次/分,血压90/60mmHg(12/8kPa),中心静脉压4cmH2O(0.398kPa),毛细血管充盈迟缓。血pH为7.32。

该病人的情况是()

A.未发生休克

B.休克代偿期

C.中度休克

D.重度休克

E.虚脱

题型:选择题

已知高温下,铁能与水蒸气反应生成四氧化三铁和氢气,该反应为可逆反应:

(1)该反应的化学方程式为______

(2)该反应的平衡常数表达式为:______.

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