Many phone numbers ____________ zeros.[ ]
A. has
B. are
C. have
答案:C
“择其善者而从之,其不善者而改之”。这句话告诉我们[ ]
①要有主见 ②避免盲目从众 ③要兴趣广泛 ④以乐观的态度对待生活
A.②④
B.①③
C.①②
D.③④
影响建筑构造的有关因素有哪些?