Courses were developed by professional linguists, and it shows in the pacing. Each concept builds logically, then repeats through guided conversation and review sessions, so phrases stick long enough to use them on a real street, not just a quiz.
公安机关应当将传唤的原因和依据告知被传唤人。对无正当理由不接受传唤或者逃避传唤的人，经公安机关办案部门负责人批准，可以强制传唤。
。safew官方版本下载对此有专业解读
Credit: Samsung
Astronaut Jim Lovell, who guided the Apollo 13 mission safely back to Earth in 1970, has died aged 97.