![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
A.坏血病B.脚气病C.癞皮病D.恶性营养不良症E.夜盲症 维生素PP缺乏会引起
A.坏血病
B.脚气病
C.癞皮病
D.恶性营养不良症
E.夜盲症
维生素PP缺乏会引起
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.坏血病
B.脚气病
C.癞皮病
D.恶性营养不良症
E.夜盲症
维生素PP缺乏会引起
第2题
He spends as much money as he ______ an evening dress for his wife.
A.possible to buy
B.is possible buy
C.could buy
D.could buying
第3题
A.assumed
B.assured
C.informed
D.proved
第4题
A.assumed
B.assured
C.informed
D.proved
第6题
He spends most of his spare time ________English.
A、to study
B、on study
C、on studying
D、studying
第7题
He often ______ in his speech.
A.rumbles
B.stumbles
C.tumbles
D.jumbles
第8题
He spends his time in ______ complaints rather than acting.
A.fragile
B.fertile
C.frangible
D.futile
第9题
He made ______ known to his friends that he didn't want to enter politics.
A) that B) it C) himself D) him
第10题
David thinks he spends too much time on his work.
A.真
B.False
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