It is important to maintain a constant temperature inside the greenhouse. The underlined part means _____ .
A: prevent
B: regain
C: retain
D: repel
A: prevent
B: regain
C: retain
D: repel
举一反三
- Which of the following is not the function of skin？ A: Direct contact with the world B: Keep body temperature constant C: Prevent the evaporation of body fluid D: Prevent bacteria invasion
- The function of lubricating oil is to( ) A: maintain even distribution of bearing wear B: maintain a constant oil temperature C: maintain a pressurized fluid film between moving surfaces D: remove entrained water
- The underlined part "anxiety" in the passage probably means "_________".[2分]
- It is important to maintain the balance of water inside and outside the cell() A: glucose B: albuminNa+ C: K+ D: Na+
- The underlined part means ____. ( ) A: explain B: record C: make up D: lead to