The disappearance of dinosaurs is not necessarily caused by astronomical incidents. But _________explanations are hard to find.
A.alternative B.aggressive C.ambiguous D.apparent
—What does the stuff on your T-shirt mean?
—it’s nothing .Just something _________.
A.as clear as day
B.off the top of my head
C.under my nose
D.beyond my wildest dreams
Determining where we are _________our surroundings remains an essential skill for our survival.
A.in contrast to B.in defense of
C.in face of D.in relation to
He’s been informed that he _________for the scholarship because of his academic background.
A.hasn’t qualified B.hadn’t qualified
C.doesn’t qualify D.wasn’t qualifying
A quick review of successes and failures at the end of year will help _________your year ahead.
A.shape B.switch C.stretch D.sharpen
Only five years after Steve Jobs’ death ,smart-phones defeated _________PCs in sales.
A.controversial B.contradictory
C.confidential D.conventional
