The oceans do not so much divide the world _______ unite it
A
本题考查固定句型：notsomuch…as…，这个句型用以肯定as后面的内容，而在一定程度上否定as前面的内容，表示“与其说…还不如说…”，“更多的是…而不是…”。句意：与其说世界以洋分界，不如说以洋连在一起。
Robots differ from automatic machines ________ after completion of one specific task，they can be reprogrammed by a computer to do another one.
Please write a report _______ the above subjects are to be covered.
Sincewehaveafocusedsubject，weshouldnottalk________.
Fishis________andexpensiveatthistimeoftheyearinthisarea.