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【单选题】
From the passage we can infer that______.A.
there are too many social problems in this country.
B.
people are very poor during the time for giving.
C.
the government seems to have done little to help the poor.
D.
not all the staff for the organizations work without being paid.
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举一反三
【单选题】按驱动形式分类,特斯拉modle s车型属于()
A.
交流电机驱动的纯电动汽车
B.
直流电机驱动的纯电动汽车
C.
双电机驱动的纯电动汽车
D.
双绕组电机驱动的纯电动汽车
【单选题】It ________ some time _________ I realized the truth.
A.
was; before
B.
is; before
C.
has been; until
D.
has been; after
【简答题】面向对象的三大特性是:
【简答题】已知甲基橙 p K (HIn) = 3.4 ,当溶液 pH = 3.1 时 [In - ]/[HIn] 的比值为 ____________ ;溶液 pH = 4.4 时 [In - ]/[HIn] 的比值为 _________。
【简答题】面向对象的三大特性是:
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