Read the following sat test question and then click on a button to select your
answer.
k(k-1/2)=-1/16
The equation above is satisfied by what value(s) of k?
A.k=1/8
B.k=1/4
C.k=-1/8 and k=1/8
D.k=-1/4 and k=1/4
答案：B
解析：
Choice B is correct.
k 平方-1/2k+1/16=0
重点单词：
multiple ['mʌltipl] adj.许多，多种多样的
equation [i'kweiʃən] n. 相等，方程(式), 等式，均衡