当代→英语｜A|Middle-aged hearts get younger with aerobic exercise.$B|High-intensity exercise is more suitable for the young.$C|It is never too late for people to start takin…〔05-06〕

  外国→英语｜picurl@@@Please fill in the upper letters of the corresponding options in the input box.41.${input}；42.${input}；43.${input}；44.${input}；45.${input}2019年全国硕士研究生招生考…〔04-23〕

  外国→英语｜A|To attract younger laborers to farm work.$B|To get native U.S. workers back to farming.$C|To use more robots to grow high-value crops.$D|To strengthen financial…〔09-10〕

  外国→英语｜A|preserve the diversity of species in them$B|accelerate the growth of young trees$C|strike a balance among different plants$D|lower their present carbon-absorbin…〔09-10〕