If you make every effort, your dream will________, and this________all the people.
A:be come true; is true to
B:come true;is true of
C:realize;is true for
D:be realized;is true to
甲、乙、丙演示图,显示了森林、草地所具有的哪些作用( )
①防风固沙 ②防止水土流失 ③涵养水源 ④维护生物多样性
已知三种短周期元素的阴离子X3-、Y2-、Z-具有相同的电子层结构,则下列有关说法中正确的是( )