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【单选题】
已知连杆的长度和连杆的两个工作位置，设计一平面四杆机构，有( )种方案？A.
1
B.
2
C.
3
D.
无穷
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【简答题】ski v.
【单选题】Rose won the first prize in this contest, and she ______ a reward for her efforts.
A.
reserved
B.
preserved
C.
conserved
D.
deserved
【单选题】Ms. Chen is a Chinese citizen, she obtained a reward of RMB 20,000 by the chance of a raffle in a store, the amount she received was net income excluding taxes and the store paid the tax liability of ...
A.
RMB 2,800
B.
RMB 4,000
C.
RMB 5,000
D.
RMB 3,200
【单选题】健康检查的种类不包括（ ）。
A.
儿童家长人所（园）前体格检查
B.
晨间检查及全日健康观察
C.
儿童入所（园）前体格检查和儿童人所（园）前家庭访视
D.
定期儿童体格检查
【简答题】Nancy and Peter like sports. In summer they swim and in winter they ski. They are planning a ski trip for this weekend, but they don’t know about the weather. It’s 7:30 now, and they are listening to ...
【单选题】Todd finally decided to take ski lessons because _________.
A.
Jen suggested him to do so
B.
his poor ski skills might hurt himself and others badly
C.
he was laughed at by the people around
D.
the ski instructor forced him to do so
【简答题】Years of training has y_____ (产生) a reward for Sarah. She has won a spot on the national team.
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