To prevent accidents, a drivers Ed car______.
- A has a sign inside it
- B has two sets of brakes
- C can't run very fast
- D is big enough to hold five persons
搜答案，更轻松！
To prevent accidents, a drivers Ed car______.
52．答案为B 短文第二段Drivers Ed cars are unlikeother cars in which they have two sets of brakes表明训练车有两个刹车。