【简答题】John is 6 years old. He can read and write very well, but he can't tell time. He doesn't say 'eight o'clock', 'twelve o'clock' or 'four o'clock in the afternoon'. He says 'breakfast time', 'lunchtime'...
【简答题】This spring, the H7N9 virus(病毒)hit China. This brings the total number of H7N9 cases to 124 in China. So far, 23 people have died. Most of the patients seemed to have the common flu.Other patients had...