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【单选题】
关于家庭的类型,叙述不正确的是:A.
核心家庭由父母及未婚子女组成或夫妇无孩（"丁克"家庭）
B.
核心家庭的特点是结构简单﹑关系较稳定、资源少
C.
主干家庭是由父母、已婚子女及第三代组成
D.
联合家庭由核心家庭及其较近的亲戚组成，如叔叔﹑姑姑等
E.
四世同堂一定是核心家庭
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【单选题】— Why has Mr. Green been busy going to the library recently? — _____ ready for the public speech. [ ]
A.
Get
B.
To get
C.
Having got
D.
Getting
【简答题】阅读理解，判断对(T)错(F)。 Mr. Green has a dog. It loves him very much. One day Mr. Green goes out to throw away his old shoes. He puts them near the rubbish box. The dog goes there to look for food. It sees th...
【单选题】— Is Mr. Green at home? — No, he ______ Shanghai. [ ]
A.
has been to
B.
has gone to
C.
is going to
【单选题】脉冲当量是指( )
A.
每发一个脉冲信号，机床相应移动部件产生的位移量
B.
每发一个脉冲信号，伺服电机转过角度
C.
进给速度大小
D.
每发一个脉冲信号，相应丝杠产生转角大小
【单选题】脉冲当量是指( )
A.
进给速度大小
B.
每发一个脉冲信号，相应丝杠产生转角大小
C.
每发一个脉冲信号，机床移动部件的位移量
D.
每发一个脉冲信号，伺服电机转过的角度
【单选题】Mr. Green has recently been ______ of the company.
A.
appointed to president
B.
appointed president
C.
appointed a president
D.
appointed the president
【单选题】Mr. Green _______ to Beijing two weeks ago. He ______ there many times.
A.
has gone; has been
B.
went; has been
C.
has gone; went
D.
went; went
【单选题】Green tea has in recent years attracted much attention in the West for a wide range of possible ______ effects.
A.
advantageous
B.
beneficial
C.
favorable
D.
preferable
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