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【单选题】
Jim and Jack’s book表示:A.
Jim和Jack共同的书
B.
Jim和Jack各自的书
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举一反三
【单选题】What does the man say he did at Paul's Lumber?
A.
Bought wood at a good price
B.
Purchased more than he needed
C.
Entered but did not buy anything
D.
Spoke to a customer representative
【简答题】The shopkeeper offered him the ______ (good)hat in the shop with the ______ (low)price.
【单选题】25℃时，等体积的 ① pH＝2 H 2 SO 4 溶液 ②0.005mol/L Ba(OH) 2 溶液 ③pH＝10 Na 2 CO 3 溶液④pH＝4 NH 4 Cl溶液中，发生电离的水的物质的量之比是
A.
1:1:10 8 :10 8
B.
10 8 :10 8 :1:10 6
C.
10 8 : 5×10 7 :1:10 6
D.
1:2:10 8 :10 8
【简答题】It is point of honor with the customer not to let the shopkeeper guess what it is she really likes and wants until the last moment.
【单选题】下列说法正确的是
A.
向蒸馏水中滴加浓H 2 SO 4 时，K W 不变
B.
常温下，0.005mol·L －1 Ba(OH) 2 溶液pH为12
C.
Na 2 CO 3 水解的离子方程式为：CO 3 2 － ＋ 2H 2 O H 2 CO 3 ＋ 2OH －
D.
NaCl溶液和CH 3 COONH 4 溶液均显中性，两溶液中水的电离程度相同
【简答题】Shopkeeper: 小题1: Tim: Hello, I’m looking for a pair of football boots for my father. Shopkeeper: Which color do you like? Tim: I like the red ones. 小题2: Shopkeeper: They’re 150 yuan Tim: ...
【简答题】25°C时,0.005mol/L的H2SO4溶液的pH_________________
【简答题】求室温条件下0.005mol/l的 H 2 SO 4 溶液的PH值
【简答题】005mol/L的H 2 SO 4 溶液的pH= 。
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