The fund is for () distress among the flood victims in the southern city.
A. releasing
B. detracting
C. relieving
D. devolving
关于外毒素,下列说法正确的是:()
A. 性质稳定,耐热
B. 毒性较强
C. 无抗原性
D. 主要由革兰阴性菌产生
用来测量细菌大小的单位是:()
A. cm
B. mm
C. μm
D. nm
Usually he managed to find plenty of work to ______ him over hard times. I think it is a good idea.
A. chew
B. blow
C. flip
D. tide