从每题所给的 A、B、C、D 四个选项中，选出可以填入空白处的最佳选项。
1.The negotiation took a big （ ） forward yesterday and a lot of agreements have been reached.
A.weight B.stage C.trick D.jump
2.The camera and the eye are （ ） in many aspects. For example，they both need light rays and have a lens.
A.reliable B.permanent C.valuable D.similar
3.The pedantic seems to underline China’s vision （ ） it is important to build a global community of nations with a shared future for humankind.
A.which B.where C.that D.when
4.Jack treasures the overcoat from his grandfather，even though it is beginning to （ ）.
A.take off B.wear out C.close up D.trickle down
5. （ ） John was looking forward to retirement，he was not accustomed to the life when it came true.