①必须加强国际合作②意识形态不同的国家难以合作③互不侵犯，和平共处④和平来之不易，悲剧不能重演

    This is Mike's bedroom. You can see a desk and a bed in the room. On the desk, there is a backpack and three books. One is a Chinese book, the other two are English books. There is a clock on the desk, too. You can see a baseball under the desk. On the bed there is a box. Can you guess what's in the box? Ah, it's a new computer game. It's the present(礼物) for Mike's seventh birthday.

没有共产党，就没有新中国，这是历史的结论。能充分说明这一结论的依据是（     ）

你的质量是　 ____　kg，请计算你的重力是多少N？（g取10N/kg） ____

1943年，为了悼念某位抗日名将，曾有人出此挽联：“将略冠军门，日寇几回遭重创。英魂羁缅境，国人无处不哀思”。参加此次抗日的军队隶属于（    ）