We may be very     31       (please) with the rapid progress we have made in every field of study, but we have almost done nothing to improve our present examination systems    32         focus on testing the students’ memory instead of their   33    ______ (able). As soon as a child begins school, he enters a world of examination   34 _________ will decide his future of job. In fact, a good examination system should encourage students to think  35 _________ themselves. But the examination now does nothing but that. It forces the students to remember        36       is taught to get high marks. Thus the students who come out first in the examination often many be the   37         (good) in their studies. In addition, such an examination system often   38  _____ (drive) teachers to cram all the time and forces them to train students what to do with the  39  ____  (come) examination.

There must be a better way to test a   40          (student) true ability as well as their knowledge.

若要用函数fopen打开一个新的二进制文件，该文件要既能读也能写，则应以哪种方式打开文件( )。

A．"wb"

B．"wb+"

C．"rb+"

D．"rb"