父本为双显性纯合子,母本为双杂合子,这两对相对性状独立遗传。其子代中,非亲本基因型的个体占子代总数的 [ ]
A.9/16
B.3/16
C.1/16
D.1/2
答案:D
We hope the measures to control house prices,____ are taken by the government, will succeed. [ ]
A. which
B. that
C. what
D. as
“自然、经济和()”是可持续发展的三个子系统,三者相互关联协调构成一个巨系统。
A、科技
B、文化
C、社会