Immigration phenomenon

Question 1:A?

Question 2:C

Test analysis:

Question 1: Looking at the picture, from 19 10 to 1970, the foreign population has not changed much, but the pr

Question 1:A?

Question 2:C

Test analysis:

Question 1: Looking at the picture, from 19 10 to 1970, the foreign population has not changed much, but the proportion of foreign population has continued to decline steadily, indicating that the total population of the country has continued to grow steadily during this period. After 1970, the migration population increased rapidly, and the proportion of the total population increased slowly, indicating that the total population continued to grow, which can only be consistent with ①, so A is right. ② After 1950 years in the figure, if the total population remains unchanged and the foreign population increases, the proportion of the foreign population to the total population will increase in direct proportion, and B is wrong. (3) and (4) There was a period when the total population declined, which was inconsistent with the decline in the proportion of foreign population, and C and D were wrong.

Question 2: According to the previous analysis, the period of the fastest growth of the total population in figure 1 is the period of the maximum slope of the curve, which is about 1950- 1970. From the analysis of the number of floating population, from 1950- 1970, the number of floating population has not changed much, but it accounts for the smallest proportion of the total population, indicating that the population has increased the most during this period, with C pairs. A, b and d are all wrong.