According to The Environmental Quality Standards for Surface Water introduced in 2002, the best water quality is at _________. ( )
A: Grade I
B: Grade V
C: Grade IV
D: Grade VI
A: Grade I
B: Grade V
C: Grade IV
D: Grade VI
举一反三
- According to The Environmental Quality Standards for Surface Water introduced in 2002, water at Grade V is______. ( ) A: unusable B: the best C: for industry usage D: for agriculture and general landscape usage
- Goods of average quality is called ( ) A: GMD B: FAQ C: Grade D: Selected
- Which grade were they in? A: Grade 8 B: Grade 9 C: Grade 10 D: Grade 11
- The most common division between primary and secondary education in the US is ___________.（ ） A: primary schools (Grade 1 to Grade 6) and middle schools (Grade 7 to Grade 12) B: elementary schools (Grade Kindergarten to Grade 8) and high schools (Grade 9 to Grade 12) C: elementary schools (Grade Kindergarten to Grade 3), middle schools (Grade 4 to Grade 6) and high schools (Grade 7 to Grade 12) D: grammar schools (Grade Kindergarten to Grade 6) and high schools (Grade 7 to Grade 12)
- They are the students of ______. A: grade 7 B: Grade 7 C: 7th grade D: Grade 7th