11.The early settlers of the American continent ___________

11.The early settlers of the American continent ___________ copper __________ corn with the Indians.
A) mixed…with B) referred…to
C) traded…for D) attached…to
12.I was trying to __________ him _________,but failed because he didn’t fit into any type I knew.
A) check…through B) size…up
C) pick…out D) note…down
13.No artificial light can _________ daylight for general use.
A) make up for B) do with C) stand for D) compare with
14.It was truly a miracle that the little girl ________ the flood by climbing onto a tree.
A) explored B) survived C) captivated D) relieved
15.The army is reported to be _________ considerable resistance in some remote rural areas.
A) companioning B) discarding
C) encountering D) embracing
16.The Princess’ biography ________ that her marriage was not as satisfactory as was once believed.
A) explored B) revealed C) identified D) inquired
17.Farmers mistrusted speculative（投机的）grain selling through Grain Exchange.It happened too often that they sold their wheat soon after harvest ________ see prices rising and speculators getting rich.
A) only to B) so as to C) in order to D) in attempts to
18.__________ I fully understand your point of view on what makes a marriage perfect,I do also have some sympathy with your parents’.
A) Since B) That C) While D) When
19.I actually don’t want to drag you away from your key pal but I’m only acting _________ your best interest.
A) on B) with C) for D) in
20.To my despair,I eat __________ I want and I still don’t seem to put on any weight.
20.To my despair,I eat __________ I want and I still don’t seem to put on any weight.
A) whatever B) however C) whichever D) whenever

11-15 CBDBC
16-19 BAAD
20 C