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【单选题】
牙局部用药说法正确的是A.
甲硝唑
B.
素
C.
过氧化氢
D.
碘制剂
E.
以上均可
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举一反三
【单选题】What is the most important way for people to use more fresh water according to the author?
A.
To take more water from the sea.
B.
To protect mountainous areas.
C.
To save more water in daily life.
D.
To protect the natural ecology balance.
【简答题】What is the most controversial use of CRISPR-Cas9?
【单选题】According to this article, what is the most important reason for the widespread use of English?
A.
it was popular during Shakespare's time
B.
it is used in former British colonies
C.
it serves the needs of its native speakers
D.
it is a world language that is used for international communication
【简答题】What is the most effective way to reduce tobacco use according to the WHO’s report? [A] Monitoring tobacco use and prion policies. [B] Protecting people by establishing smoke-free areas. [C] Enfo...
【单选题】What is the most effective way to use the eyes during night flight?
A.
Look only at far away, dim lights.
B.
Scan slowly to permit off-center viewing.
C.
Concentrate directly on each object for a few seconds.
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