A:大肠杆菌
B:大豆
C:蚂蚁
D:蚯蚓
下列化学实验的主要现象描述不正确的是( )
先化简,再求值: (x−2+3x+2)÷x2+2x+1x+2 ,其中x=﹣3.
—You are relaxing yourself here?
—Yes. It feels ____ to walk slowly along the river.