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问题 单项选择题

D-4型电铲回转立轴小齿轮的齿数为（）个。

A．11

B．14

C．20

答案

参考答案：A

补全对话，情景问答
选择合适的句子完成对话。
A. Do you think I can join the walk?
B. Who can take part in the walk?
C. Oh, that sounds great!
D. Have you heard about a fund-raising event ever called Trailwalker?
E. Is it organized by Oxfam Hong Kong?
Kitty:   1  
Betty: Yes .  2  
Kitty: Yes, it is . I am thinking about joining it . It's a good chance to learn about team spirit .
Betty:  3  
Kitty: People over 18 years old . They have to finish the walk within 48 hours .
Betty: It's a tough walk but I'm really interested in it .  4  
Kitty: Yes , sure . We can be in the same team .
Bett :  5   Let's find another two members .
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单项选择题

钙拮抗剂

A．硝苯地平
B．卡托普利
C．哌唑嗪
D．可乐定
E．利血平

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