在一个比例尺里,两个外项的积是最小合数,一个内项是8,另一个内项是______.
最小的合数是4,
另一个外项是:4÷8=0.5;
故答案为:0.5.
The main reason for the fast growth of population is not()a rise in birth rates as a fall in death rates as a result of improvements in public health service and medical care.
A. such
B. the same
C. so much
D. as much
病原携带者是指有症状而能排出病原体的人或动物。