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【单选题】
What can we learn from the first paragraph?A.
It is a natural tendency for people to believe that innovation is stimulated by patents.
B.
The inventors cannot reap the fruits of their patents until many years later.
C.
Individuals and organizations welcome competitions brought about by the patentees.
D.
Patenting can never be a blessing to society if it fails to benefit people at large.
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举一反三
【简答题】鸭疫的病原为（）、猪格氏病的病原（）、鸡传染性鼻炎病原为（）、猪传染性胸膜肺炎的病原为（）。
【单选题】He (invited) me (to go) to a party (and) I did not want to (join him) that evening.
A.
invited
B.
to go
C.
and
D.
join him
【单选题】I invited him ___ our school last year. [ ]
A.
to visit
B.
visited
C.
visiting
D.
visits
【单选题】.I invited him to dinner, but he___ my invitation with thanks.
A.
approved
B.
declined
C.
ignored
D.
abandoned
【多选题】下列说法正确的是( )。
A.
资产类账户增加记贷方，减少记借方
B.
负债类账户增加记贷方，减少记借方
C.
收入类账户增加记贷方，减少记借方
D.
费用类账户增加记贷方，减少记借方
【单选题】He (invited) me (to go) to a party (and) I didn't want to (join him) that evening.
A.
invited
B.
to go
C.
and
D.
join him
【单选题】下列说法正确的是 ( )
A.
H2O的摩尔质量是18
B.
lmolO2的质量是32g/mol
C.
0.5mol氮
D.
含3.01×1024个CO2分子的CO2物质的量约为5mol
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