问题
选择题
Advances in using genes as well as nanotechnology make it likely __humans will live in the future beyond ____has been possible in the past.
A．that ,which
B．what, that
C．that ,what
D．where , what
答案
答案：C
考查复杂句：第一空填that引导的是主语从句，it是形式主语，句型是make it+adj+that…,第二空填的是what引导宾语从句，做beyond的宾语从句，在宾语从句中what做主语。选C。