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【单选题】
在下列溶液中，BaSO 4 的溶解度最大的是 [ ]A.
1 mol·L -1 H 2 SO 4 溶液
B.
2 mol·L -1 H 2 SO 4 溶液
C.
纯水
D.
0.1 mol·L -1 H 2 SO 4 溶液
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举一反三
【单选题】I had to buy of these books because I didn’t know which one was the best.
A.
both
B.
none
C.
neither
D.
all
【单选题】I didn’t know the girl you the sheep.
A.
had fed
B.
had her fed
C.
had feed
D.
had to feed
【单选题】I didn’t know the new word in the text, so I had to the word in a dictionary.
A.
look out
B.
consult
C.
refer to
D.
look up
【简答题】I didn’t know I had opened Pandora’s box when I entered this room.
【单选题】I sooner but I didn’t know that they were waiting for me.
A.
had come
B.
was coming
C.
would come
D.
would have come
【单选题】I didn’t know the word. I had to _______ a dictionary.
A.
look out
B.
make out
C.
refer to
D.
go over
【简答题】I had to buy all these books because I didn’t know which one was the best.
【简答题】When I was a kid I didn’t know what I wanted to be when I grew up, but I knew what I didn’t want to do. I didn’t even really know what one was. My elder brother is deaf. Growing up, I ended up defendi...
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