皮皮学，免费搜题
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【单选题】
取2.0g葡萄糖,依法检查砷盐,其限量为0.0001%,需取标准砷溶液(每1ml相当于1μg的As)多少毫升?A.
1.0ml
B.
1.5ml
C.
2.0ml
D.
3.0ml
E.
2.5ml
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举一反三
【单选题】Why does the traveler want to take a bus?
A.
The bus tickets are cheaper than the train tickets.
B.
The bus trip is comfortable because it is air-conditioned.
C.
Bus stops at several cities along the way.
D.
The traveler wants to experience another way of traveling.
【简答题】Why does Miss Smith arrange the visit to MIT and Harvard in a single day?
【单选题】Why does Diana take a bus that day?
A.
She is environmentally-concerned.
B.
She wants to save money.
C.
Her car is being repaired in the shop.
D.
She wants to see the man on the bus.
【单选题】Why does Liz leave Harvard University?
A.
She had no money to study there
B.
She liked Columbia Universtiy more than Harvard University .
C.
She wanted to take care of her sick father.
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