【单选题】Teachers recommend parents __________ their children under 12 to ride bicycles to school for safety.
【判断题】Under a bareboat charter,the charterer takes over almost all of the shipowner’s functions.( )
【单选题】若证券A与证券B的相关系数为0.5,则两者之间的关系是( )。
【单选题】The phrase “go under” in the second paragraph is closest in meaning to ___.
C.
do a bad job educationally
D.
have low teaching standards