Not the slightest provision has been made for the comfort of the employees, the idea______that something was gained by making them work hard and giving them as little as possible.
A. has been
B. to be
C. is
D. being
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化脓性脑膜炎其传播的主要途径是
A. 呼吸道分泌物或飞沫传播
B. 接触性传播
C. 昆虫传播
D. 血液传播
E. 以上都不是
The ability ______ a mental record of earlier experiences is referred to as "memory".
A. of retaining
B. for retaining
C. to retain
D. that retains
引起鹅口疮的致病因素是
A. 细菌
B. 病毒
C. 真菌
D. 原虫
E. 过敏