1年前1个回答
1年前1个回答
你能帮帮他们吗
精彩回答
It's ________ to stick your chopsticks into your food while having a meal.
1年前
在水溶液中YO3n-和S2-可发生反应:YO3n-+3S2-+6H+==Y-+3S↓+3H2O。下列有关叙述正确的是
1年前
His _______(秘书) says he's still out at lunch.
1年前
从甲地到乙地坐火车需18小时,坐飞机比坐火车少用15小时,飞机每小时行735千米,甲乙两地相距多少千米?
1年前
Pudong Developmental Zone is no longer a rural area ___ it u
1年前