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【判断题】
抗体是淋巴细胞受到抗原刺激后产生的。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】—Look! Some people are running the red lights. —We should wait ______ others are breaking the rule.
A.
although
B.
if
C.
unless
D.
because
【单选题】People are running! ______ you, you don't need to hurry since you are injured.
A.
Regardless of
B.
Even if
C.
Because of
D.
As for
【单选题】Look, so many people are running out of the station. I wonder what ________.
A.
is happened
B.
was happening
C.
is happening
D.
had happened
【简答题】随着导通角增大, U d 将 ,该电路中触发角移相范围为 ( ) 度 ~ ( ) 度
【单选题】The_______ people are running to see the __________ accident.
A.
astonishing; astonished
B.
astonished; astonishing
C.
astonishing; astonishing
D.
astonished; astonished
【简答题】Complete the conversation with expressions from the boxes. Philippa: Mike is running a half-marathon! Timo: (1) ________________ people are running nowadays. Philippa: The problem is that ...
【单选题】听力原文：(A) A person is running. (B) People are walking their dogs. (C) People are sitting on a bench. (D) A man is fishing from the bridge.
A.
B.
C.
【简答题】听力原文：(A) People are waiting to cross a city street. (B) People are waving to each other across the street. (C) People are crossing a city street. (D) People are running in the street.
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