听觉中枢位于()
A.颞横回
B.中央前回
C.中央后回
D.颞上回
E.额下回
参考答案:D
地基的破坏一般有()、()和()等三种型式,而其中()破坏过程将出现三个变形阶段。
Until recently historians assumed that calendars ________ with the advent of agriculture.
A.came to existence
B.came to existing
C.came to exist
D.were existential