下列元素名称与其对应的元素符号完全正确的是（ ）
A．锌zn
B．氖 Na
C．银 Ag
D．铜Ga
答案：C
The news inspired the whole world______ Israeli scientists have invented a kind of magic glasses_________ can let the blind see things.
A．that; what
B．which; that
C．what; that
D．that; which
怎样在计算机上设置用户帐户的密码，以防止非法使用者进入？
