题干
— How is the test that you took yesterday?
— Unfortunately, not even one of the hundred students who took the test ______ passed.
— Unfortunately, not even one of the hundred students who took the test ______ passed.
A：ha
B：have
C：are
D：i
答案(点此获取答案解析）
A
（ 
为参数）与直线 
（ 
为参数）垂直，则 
k的值是（ ）