单选题根据下面材料，回答题.


Which of the following is TRUE according to the passage?

A．Multiple choice questions are objective because people cannot be trained any techniques.
B．Sweden emphasizes the teaching of English without paying attention to other countries.
C．We have to depend on our own impression to judge the English standards.
D．Compositions are useful to test people's English ability because people have to write out their viewpoints.

A．the choices.
B．the reading materials.
C．the objective tests.
D．the techniques of multiple choice.

A．the. contents are changing all the time.
B．the tests do not always focus on the same thing.
C．the processes of scoring are different.
D．they contain too many reading comprehension questions.