This is the most important respect (which) civilized (man) can be distinguished (from) primitive (communities).（　）

A:which B:man C:from D:communities

What may man find in the future

A:There will be no place the same as our Earth. B:There will be many places, better than our Earth. C:There will be some planets which may be suitable for our human being to live. D:There will be a planet for man to be used as home in the near futur

This is the most important respect (which) civilized (man) can be distinguished (from) primitive c(ommunities).

A:which B:man C:from D:ommuities

What will make one man happy may not make another man happy. This sentence means ______.

A:when one man feels happy, another man will feel sad B:what will make one mail happy may make another man happy also C:different people hold different opinions about happiness D:both A and B

The box of bricks hit the man because ______.

A:the box of bricks was heavier than him B:the box of bricks was lighter than him C:the box of bricks came down too fast D:the man was too careless

What happened when the man let go the rope

A:The box fell down and hit the man on the head. B:The box continued to go up. C:The man went up to the top of the building. D:The man fell down and broke his legs.

The box of bricks hit the man because ______.

A:the box of bricks was heavier than him B:the box of bricks was lighter than him C:the box of bricks came down too fast D:the man was too careless

It was remarkable of man to invent the wheel because ______ .

A:it led to many other inventions B:man had no use for it then C:there were no wheels in nature D:all of the above