6/28, 21/98, 18/84, 9/42, ()
A.25/60
B.12/44
C.12/56
D.25/78
参考答案:C
完成句子(共5小题;每小题1分,满分5分)
1.中国人正在尽自己的一份力以解决这些环境问题。
People within China _______ _______ _______ ____ to solve these environmental problem.
2.他们很关心关于培训的规定。
They are concerned about the rules _____ _____ ______ training.
3.作为世界第三长河,长江的环境问题已经引起了国内外的关注。
As the third longest river in the world, the health of the Yangtze River ___________ ___________ ___________ both in China and abroad.
4.如今许多人把这一变化归咎于二氧化碳等气体。
Today many people ___________ this change ___________ gases such as carbon dioxide.
5.第一只成功地用成年动物的细胞克隆出的哺乳动物是多利羊。
The first mammal ___________ ___________ ___________ successfully from an adult cell was Dolly the sheep.
有些采用不等长双臂独立悬架汽车,上摆臂轴与车架之间前、厚垫片的厚度一处增加另一处减少可以调整()。
A.车轮外倾角
B.主销后倾角
C.主销内倾角