315.Studies show that people are more ______ to suffer from back problems if they always sit before computer screens for long hours.
A.likely
B.possible
C.probable
D.sure
316.The school was moved out of downtown as the number of students had grown too ______.
A.small
B.few
C.large
D.many
315.答案是A；likely，possible和probable均为可能的，但通常possible和probable作表语时，其主语只能是物，而likely则可以是人；此句中be more likely to do更有可能干某事。
316.答案是C；修饰数目number时，用large或small。根据下文had grown得知选C。
