教育心理学重点研究人类的（）与教育。

I finished my ______________ exams yesterday.

A．end of year

B．end of-year

C．end-of-year

D．end-of-year’s

生理性胃食管反流症状消失多在（）

A.3～6个月

B.6～8个月

C.7～9个月

D.8～10个月

E.10～12个月

阅读短文，根据短文内容及首字母提示，在空白处填入一个适当的单词

Coober Pedy is a small town in the Australian desert (沙漠). It's famous not only for its opals (猫眼石) , but also for a very unusual小题1: r________—the people live and work underground.

Why do people choose to live under the ground? To avoid (避开) the小题2:h_______ days and cold nights-daytime temperatures can rise to 50 °C or more and on a cold night they can fall to小题3:z_______. The locals say that their strange lifestyle is the only answer小题4: t________ the unpleasant climate (气候) . In the underground homes,the temperature is always a very pleasant 19°C to 24°C .But that's not the only advantage ; the people there don't need to pay builders if 小题5: t_______want to build a home or make any changes.

You would be very surprised to see 小题6: h________well people manage to live underground. They have modern kitchens and bathrooms, sometimes even spas (温泉)“People think it's impossible to live here and that we're like ancient people,小题7: b_______ that's not true. " says Bev Smith, who has lived in Coober Pedy for over 30 years. When my husband, Larry, and I first came here, life was very小题8: d _______ and many people decided to leave. But now, things have小题9: c________a lot and we’re very comfortable. We now have underground shops, hotels, restaurants, cafes and churches!”

Abigail and Brian Tynan 小题10:1_______ their large house in Melbourne(墨尔本) two years ago to have in an underground home. "My mouth fell open when I saw my wonderful underground home," remembers Brian. " I really enjoy living here. "

NGS系统有三个指示灯指示NGS的状态，下列分析正确的是（）

A.蓝色灯亮表示系统失效

B.琥珀色灯亮表示性能降低，系统需要维护

C.飞机上电后，如果所有的灯都不亮，则表示该指示系统正常

D.如果所有的灯都不亮，则表示该指示系统失效，需按照BITE方法进行排故

晶体三极管根据内部结构不同分为（）。

A、PNP型和NPN型

B、PNN型和NPP型

C、NPP型和PNP型

D、NPN型和NPP型