阅读理解。
We may be very pleased with the rapid progress we have made in every field of study. But the
way to test a student's knowledge and ability still remains as poor as it was, We have almost done
nothing to improve our examination system.
It is well known that the examination system we are now using may be a good way of testing a
student's memory, but it can tell you nothing about a student's ability. It does no good to students
and 
teachers.
As soon as a child begins school,he enters a world of examination that will decide his future of job.
In fact a good examination system should train a student to think for himself. But it now does
nothing about that. So students are encouraged to member what is taught. It does not enable them to
gain more and note knowledge. The students who come out first in the examination often may not be
the best in their studies.
Besides, the examinations often force teachers to train students what to do with the coming
examination from time to time. There must be some simpler and better way to test a student' s ability
besides knowledge. And that is what we should do at once.
1. Now little has been done to________.
A. decide a student's job
B. test a student's ability
C. test a student's knowledge
D. test a student's memory
2. The examination system we are now using can only make the students________.
A. gain more and more knowledge
B. make rapid progress
C. remember what is taught
D. think for themselves
3. In order to make students gain high marks in the coming examination, teachers have to________.
A. develop their students' ability
B. fill their students' heads with much information
C. teach freely
D. teach their students how to study
4. The passage tells us about the importance of________.
A. getting examination system improved
B. taking examinations
C. testing a student' s knowledge
D. working hard at all lessons
NH3?H2O+ H+