高考模拟备考套餐加固训练练透考点12015课标设复数z满足i,则|z|()A1B.C. D2解析:由题意知1zizi,所以zi,所以|z|1。答案:A22015课标若a为实数,且3i,则a()A4 B3C3 D4解析:3i,2ai(3i)(1i)24i,又aR,a4。答案:D32015湖南已知1i(i为虚数单位),则复数z()A1i B1iC1i D1i解析:由题意得zi(1i)1i,故选D。答案:D42015山东若复数z满足i,其中i为虚数单位,则z()A1i B1iC1i D1i解析:由已知i(1i)ii2i1,所以z1i,故选A。答案:A52015江苏设复数z满足z234i(i是虚数单位),则z的模为_。解析:设复数zabi,a,bR,则z2a2b22abi34i,a,bR,则a,bR,解得或则z(2i),故|z|。答案: