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【单选题】
缓冲溶液的pH缓冲范围为( )。A.
pKaΘ+1
B.
pKaΘ—1
C.
pKaΘ
D.
(pKaΘ—1)～(pKaΘ+1)
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举一反三
【单选题】Which of the following is NOT true?
A.
The woman will give the essay to the secretary.
B.
Janet cared about her essay very much.
C.
The essay will be placed on Dr. Ellis' desk.
D.
Dr. Elli will get the essay when he returns.
【简答题】English Equivalents of Chine
【单选题】When we have agreed broadly on what should be said, the secretary will produce a preliminary （）for the committee's approval.
A.
project
B.
design
C.
draft
D.
drawing
【简答题】SECTION C Directions: Write an English composition according to the instructions given below in Chinese 人们在生活中面临各种各样的挑战，请说一说人们为什么喜欢挑战和有哪些新的挑战有待人们探索。 注意： 适当展开想象，语意连贯，结构完整。 词数不少于120（不包括文章的开头）。 For thous...
【单选题】The secretary will get ____________ ready before the meeting.
A.
something
B.
anything
C.
everything
【简答题】SECTION B ENGLISH TO CHINESE Translate the following underlined part of the text into Chinese. Write your translation on ANSWER SHEET THREE. Scientific and technological advances are enabling us to co...
【单选题】Take things easy! The new secretary will relieve us _____ some of the paper work. [ ]
A.
of
B.
for
C.
from
D.
by
【单选题】The company will be left in the _______ of the secretary when the manager is away.
A.
change
B.
charge
C.
need
D.
place
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