<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?brezhnyev alipandishwa katika kamati kuu mnamo 1952 na kuwa mwanachama kamili wa politburo mnamo 1957.  <response>: brezhnev was promoted to the central committee in 1952 and became a full member of the politburo in 1957. 