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【单选题】
James Fennimore Cooper is famous for his ______, a series of five novels about the frontier of American settlers.
A.
The Pathfinder
B.
The Legend of Sleepy Hollow
C.
Leatherstocking Tales
D.
The Deerslayer
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【单选题】用Ce4+标准滴定溶液滴定Fe2+应选择()作指示电极。
A.
PH玻璃电极
B.
银电极
C.
氟离子选择性电极
D.
铂电极
【单选题】—What’s a quarter and a half, do you know? —Yes, it’s __________.
A.
two-sixths
B.
three quarters
C.
three-fourth
D.
three-sixths
【单选题】It's over ______ from Shijiazhuang to Beijing. [     ]
A.
three hours' drive
B.
three hour's drive
C.
three hour drive
【单选题】-- What's one-fourth and a half, do you know?-- Yes, it's ______.
A.
three-fourths
B.
three-fourth
C.
three fours
【单选题】用Ce4+标准滴定溶液滴定Fe2+应选择( )
A.
pH玻璃电极
B.
银电极
C.
氟离子选择性电极
D.
铂电极
【单选题】用Ce4+标准滴定溶液滴定Fe2+应选择 ( )作指标电极
A.
pH玻璃电极
B.
银电极
C.
氟离子选择性电极
D.
铂电极
【单选题】What time is it now?
A.
It's three fifty.
B.
It's three fifty-five.
C.
It's four fifteen.
【单选题】用Ce4+标准滴定溶液滴定Fe2+应选择()作指示电极
A.
ph玻璃电极
B.
银电极
C.
氟离子选择性电极
D.
铂电极
【单选题】在Excel中,公式的开头必须以()符号开头。
A.
=
B.
C.
D.
*
【单选题】用Ce4+标准滴定溶液滴定Fe2+应选择()作指示电极。
A.
pH玻璃电极
B.
银电极
C.
氟离子选择电极
D.
铂电极
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