【单选题】食物蛋白质营养价值的高低主要取决于:( )
【单选题】In the first example, the pile of books on the table-cloth will ______.
B.
scatter onto the ground
C.
remain in its position of rest
D.
be wrapped in the table-cloth
【单选题】电流通过人体,造成人体伤害的伤害称为()
【单选题】There_____a pen and two books on the table.