whEn thE spACECrAFt wAs going to lAnD,______.
A．it proDuCED A lot oF noisE
B．thErE wErE sCAttErED showErs
C．pEoplE CoulD sEE it high in thE sky
D．pEoplE CoulD nEithEr sEE nor hEAr it