题目

After persuading most of his patients, his wife and son to go back to France following the lockdown of Wuhan, Philippe Klein, a French doctor, decided to stay in the epicenter during the COVID-19 outbreak.I am a doctor, so I have to do my job and do my______, said Klein, a general practitioner at Wuhan Union Hospital in Hubei province.Before authorities in Wuhan______the city, suspending all outbound flights and trains in late January to______the highly infectious disease, Klein had______about 500 foreigners living in Wuhan, most of them French.Following the outbreak, he closed his______at the9．已知f（x）=cos2ωx-$\sqrt{3}$sin2ωx，f（x）的最小正周期是π．（1）求f（x）在[-$\frac{π}{2}$，$\frac{π}{2}$]上的单调递增区间；（2）若x∈[0，$\frac{π}{2}$]时，f（x）+m≤3，求实数m的取值范围．