【单选题】Earthquake How does an earthquake start? What makes an earthquake happen? The rock of the earth's crust (地壳) may have a fault', a kind of break in the surface. The blocks which make up the earth move,...
【单选题】Earthquake How does an earthquake start? What makes an earthquake happen? The rock of the earth's crust (地壳) may have a 'fault', a kind of break in the surface. The blocks which make up the earth move...
【单选题】Earthquake How does an earthquake start? What makes an earthquake happen? The rock of the earth's crust (地壳) may have a fault, a kind of break in the surface. The blocks which make up the earth move, ...