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【单选题】
抗原与抗体结合发生交叉反应是因为A.
抗原与抗体性状相似
B.
抗原与抗体的比例合适
C.
不同抗原具有相同或相似抗原决定簇
D.
抗原和抗体的大小相近
E.
抗原和抗体的大小
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举一反三
【单选题】What’s the use of the letter?
A.
personal leave
B.
sick leave
C.
annual leave
D.
funeral leave
【单选题】What’s the use of local anesthetic?
A.
make you comfortable
B.
increase the pressure
C.
aggravate the pain
D.
cause inflammation
【单选题】After the first part, the author mentioned Vertical Thinking instead of his topic. What’s the use of it?
A.
An example
B.
A definition
C.
§ A comparison
【简答题】Please read the following sentences: 1. A' rose is a ' beautiful flower. 2. The 'strong should ' help the weak. 3. She 'studies from 'morning till night. 4. ' What can I 'do to help you? 5. ' Honey is...
【单选题】What’s the use ______ extra leisure time if you don’t know what to do?
A.
have
B.
to have
C.
being have
D.
of knowing
【简答题】What’s the use of name cards/business cards?
【单选题】What’s the use ______ extra leisure time if you don’t know what to do?
A.
have
B.
to have
C.
being have
D.
of having
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