【单选题】"an apple a day".count("a")的结果是( )。
【判断题】纯金属结晶时形核率随过冷度的增大而不断增加。
【单选题】“An apple a day keeps the doctor away.” means : ______
A.
The doctor goes away when he sees an apple.
B.
The doctor runs away when you give him an apple.
C.
You eat an apple every day and you can be healthy.
D.
Only doctors like apples.
【单选题】“An apple a day keeps the doctor away.” means:______
A.
The doctor goes away when he sees an apple.
B.
You eat an apple every day and you can be healthy.
C.
The doctor runs away when you give him an apple.
【单选题】"an apple a day".count("a")的结果是( )。