A:were, were
B:was, wa
C:were, wa
D:were, wa
— When can I use your computer?
—Never! ________ should you touch it.
与诗句"坐地日行八万里,巡天遥看一千河"最吻合的地点是( )
我国不少山脉走向不仅控制了主要河流的走向,还是这些河流的分水岭,如长江与黄河的分水岭为( )