1Any medical test will sometimes fail to detect a condition

1Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.划线部分是：a condition when it is present and indicate that there is one
A a condition when it is present and indicate that there is one
B when a condition is present and indicate that there is one
c a condition when it is present and indicate that it is present
D when a condition is present and indicate its presence
E the presence of a condition when it is there and indicate its presence
2 A prolific architect who worked from the turn of the century until the late 1950`s,Julian designed nearly 800 buildings in California,perhaps most notable william Randolph Hearst`s monumental estate at San Simeon.划线部分是：Julian designed nearly 800 buildings in California,perhaps most notable william Randolph Hearst`s monumental estate at San Simeon.
A Julian designed nearly 800 buildings in California,perhaps most notable william Randolph Hearst`s monumental estate at San Simeon.
B perhaps the most notable of the nearly 800 buildings in California designed by Julian ,was william Randolph Hearst`s monumental estate at San Simeon.
Cof the nearly 800 buildings in California designed by Julian ,perhaps the most notable was william Randolph Hearst`s monumental estate at San Simeon.
D nearly 800 buildings in California were designed by Julian,of which william Randolph Hearst`s monumental estate at San Simeon is perhaps the most notable .
E william Randolph Hearst`s monumental estate at San Simeon is perhaps the most notable of the nearly 800 buildings in California designed by Julian ,.

能告诉我是选C和A么?
再问： 似的似的~好厉害~~~~求教求教~~~