小儿先天性上尿路梗阻最常发生的部位在（） A.输尿管口（入膀胱处） B.输尿管下段

单词拼写。

1. To Tom's great regret, his mother died two days p______ to his arrival.

2. With a lake nearby, his new house is situated in very pleasant s________.

3. Overslept, John s_____ into the classroom through the back door without being noticed.

4. Life is like the p________ of running in which one should never stop making progress.

5. He seldom, if ever, loses his temper. In fact, he is the m_____of all the persons I have ever seen.

6. His views vary _________(不断地) just like the variable weather.

7. The Internet keeps us ______(告知) of the latest news every day.

8. Take your time with each resume(简历) , as it is the first ______(印象) you make on the hiring

     manager.

9. Her report of what happened was ______(精确的) in every detail.

10. As a top student, he received a prize at the graduation ______(典礼) of the university.

下列哪幅图表示的是动物的先天性行为

A．大山雀学着偷喝牛奶

B．失去雏鸟的红雀喂鱼

C．黑猩猩设法摘取香蕉

D．公鸡尝试绕道取食

下列有关实验说法正确的是

A．在用简易量热计测定反应热时，可使用碎泡沫起隔热保温的作用、普通玻璃棒进行搅拌使酸和碱充分反应、准确读取实验时温度计最高温度、取2—3 次的实验平均值等措施，以达到良好的实验效果

B．纸上层析属于色谱分析法，其原理跟“毛细现象”相关，通常以滤纸作为惰性支持物，滤纸纤维吸附的水作为固定相

C．检验氯乙烷中的氯元素时，将氯乙烷和NaOH溶液混合加热，用稀硫酸进行酸化后再加入硝酸银溶液

D．酸式滴定管，碱式滴定管、移液管都是准确量取一定体积液体的仪器，它们在使用时都要进行检查是否漏水、水洗、润洗、注液、调整液面等几个过程

设F是属性组U上的一组函数依赖，下列叙述正确的是

A．若Y

X，则X→Y为F所逻辑蕴含

B．若X

U，则X→Y为F所逻辑蕴含

C．若X→Y为F所逻辑蕴含，且Z

U，则X→YZ为F所逻辑蕴含

D．若X→Y及Y→Z为F所逻辑蕴含，则X→Z为F所逻辑蕴含

同辈领导的好处在于什么？