问题
单项选择题
铸造侧腭杆与余留牙的关系应为
A．离开余留牙2cm
B．与余留牙接触
C．离开余留牙4～6cm
D．离开余留牙3cm
E．离开余留牙6cm
答案
参考答案：E
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铸造侧腭杆与余留牙的关系应为
A．离开余留牙2cm
B．与余留牙接触
C．离开余留牙4～6cm
D．离开余留牙3cm
E．离开余留牙6cm
参考答案：E
From Monday to Friday most people are busy working or studying, but in the evenings and weekends they are free and 31 themselves. Some watch television or go to the cinema, others take part in sports. This is decided by their own 32 . There are many different ways to spend our free time. Almost everyone has some kind of 33 : it may be something from collecting stamps to ____34___ model planes. Some hobbies are very 35 , but others don’t cost anything at all. Some collections are worth(值得…的) 36 of money, others are valuable(有价值的) only to their owners. I know a man who has a coin collection worth several 37 dollars. A short time ago he bought a rare(罕见的)fifty-cent piece which 38 him $250! He was very happy about this collection and thought the price was all right. On the other hand, my youngest brother collects match boxes. He has almost 600 of them, but I wonder(怀疑) if they are worth any money. However, 39 my brother they are quite valuable. 40 makes him happier than to find a new match box for his collection.
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