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【多选题】
抑制菌体蛋白质合成而产生抗菌作用的药物是A.
四环素类
B.
β—内酰胺类
C.
大环内酯类
D.
多粘菌素类
E.
氯霉素
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举一反三
【单选题】It’s ______ good feeling for people to admire the Shanghai World Expo that gives them ______ pleasure.
A.
/; a
B.
a; /
C.
the; a
D.
a; the
【单选题】We have the pleasur of _________________ your letter of Oct.6.
A.
confirming
B.
confirm
C.
acknowledging
D.
acknowledge
【单选题】We take the pleasur of introducing ourselves an experienced importer line of daily products.
A.
of ， on
B.
for， by
C.
for， by
D.
be， at
【单选题】'Can you help me my English?_____ '. [ ]
A.
with; with pleasure
B.
for; with pleasure
C.
with; a pleasure
D.
for; a pleasure
【单选题】In Thoreau's opinion, the price of a thing should be measured in terms of ______.
A.
pleasure
B.
effort
C.
money
D.
life
【单选题】Travelling at high speed means_______
A.
people' s focus on the future
B.
a pleasure
C.
satisfying drivers'great thrill
D.
a necessity of life
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