同学们为开展研究性学习搜集了以下两张图片，它们共同反映的学习主题是
A．土地改革
B．农业合作化运动
C．人民公社化运动
D．家庭联产承包责任制
答案：A
Every country has its own culture. Even though each country uses doors，doors may have different functions and purposes 小题1:___________ lead to cultural differences.
When I first came to America，I noticed that
a public building had two different doors and 小题2:___________ had distinct functions. You have to push the door with the word “PUSH” to go out of the building and to pull the door小题3:_________ the word “PULL” to enter the building. This was new to me, 小题4:_________ we use the same door in South Korea. For quite a few times I failed 小题5:_________ (go )out of a shopping centre and was embarrassed. The way of using school bus doors was also strange to me. I used to take 小题6:__________ school bus to classes.
The school decided that when the driver opened both the front and back doors，students who 小题7:___________off the bus should get off first，and students who were getting on should get on later.
In South Korea, we do not need to wait for people to get 小题8:_________. One morning, I hurried to the bus, and when the bus doors opened, I 小题9:_____________(conscious) tried to get on the school bus through the front door. All the students around looked at me, I was totally embarrassed, and 小题10:___________ face went red.
某市检察院在对公安局移送审查起诉的刘某涉嫌放火罪一案时，认为犯罪事实不清，欲补充侦查，人民检察院如何处理( )
A．可以退回公安机关补充侦查，也可以自行侦查
B．不能退回公安机关补充侦查，只能自行侦查
C．可以退回公安机关补充侦查，但因涉及事实问题不能自行侦查
D．不能退回公安机关补充侦查，也不能自行侦查，而应将案件退回给公安机关
