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【单选题】
用NaOH滴定醋酸和硼酸的混合液时会出现( )个突跃A.
1
B.
2
C.
3
D.
0
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反馈参考答案：
举一反三
【单选题】The author wrote this text 查看材料
A.
to discover sentence patterns and grammatical rules
B.
to expand vocabulary
C.
to use the target language
D.
to encourage unsuccessful language learners to learn independently， actively and purposefully
E.
from clues
F.
to say strange things
【单选题】After listening to the testimony, the members of the jury delivered their verdict.
A.
sentence
B.
decision
C.
cross-examination
D.
foreman
【单选题】关于胸内压的叙述错误的是
A.
由肺的回缩力构成
B.
吸气时胸内压降低，呼气时升高
C.
吸气时胸内压降低，呼气时升高
D.
胸内压变化影响静脉回流
E.
保持肺和小气道的扩张状态
【单选题】Which-of the sentences below expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.
A.
He promised that the project would give jobs to people across America and help to create scientific breakthroughs.
B.
He promised that the project would take a lot of work from many different people and that technology needed to be improved.
C.
He promised that the jobs related to the project would help to create new technology all over the country.
D.
He promised that the project would help to create a lot of new employment opportunities related to special types of rockets.
【单选题】Which of the sentences below expresses the essential information in the highlighted sentence in paragraph 3?
A.
The discovery of the centigrade scale in 1948 brought honor to the scientist who discovered it.
B.
After an international organization decided to use the centigrade scale in 1948, Celsius reversed the numbers on the scale.
C.
In 1948, nations agreed to name the centigrade scale after the man who developed an earlier version of the scale.
D.
In 1948, Celsius honored the scientist who was first known to use an 100-degree scale by naming it the centigrade scale.
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