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【单选题】
以0.01000 mol·L -1 K 2 Cr 2 O 7 溶液滴定25.00mL Fe 2+ 溶液,耗去的K 2 Cr 2 O 7 溶液25.00mL。每毫升Fe 2+ 溶液含铁( )mg。A.
0.5585
B.
1.676
C.
3.351
D.
5.585
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反馈参考答案：
举一反三
【判断题】贝多芬1770年出生于法国，超凡的音乐才能和狂热的创作激情，使他成为音乐世界的普罗米修斯，他成了正义的化身并给人以光明和希望。最能体现其交响乐成就的当属《命运交响曲》。
A.
正确
B.
错误
【简答题】What kind of bus company is the Greyhound bus companyIt is ______ bus company.
【单选题】—The little girl ______ her seat to an old man on the bus. —What a kind girl! [ ]
A.
brought
B.
offered
C.
provided
D.
lent
【单选题】— The little girl her seat to the old man on the crowded bus. — What a kind girl! [ ]
A.
took
B.
brought
C.
borrowed
D.
offered
【单选题】It can be inferred from the passage that, had the Civil Rights movement not prompted an investigation of prison conditions, ______.
A.
states would never have established asylums for the mentally iii
B.
new treatments for major mental illness would have likely remained untested
C.
the Civil Rights movement in America would have been politically ineffective
D.
conditions in mental hospitals might have escaped judicial scrutiny
【简答题】数控铣床由哪些基本组成部分,各部分的功能是什么?
【单选题】When he used the Internet for the first time, he felt he entered a completely ________ and exciting world he'd never visited before by just clicking the mouse.
A.
apart
B.
alert
C.
aware
D.
alien
【单选题】What kind of transport does her husband prefer to take?
A.
By ship.
B.
By bus.
C.
By train.
D.
By air.
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