What should we do to better understand cats , according to the last paragraph?
A、To treat them as friends.
B、To compare them with dogs.
C、To regard them as animals.
D、To care about their behavior.
It is expected that by 2049 the population of the city ____ two million.
A、would reach
B、will have reached
C、will be reaching
D、would have been reached
3.In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.