试题与答案

乳癌根治术属于()。A.择期手术 B.限期手术 C.急症手术 D.诊断性手术 E.姑

题型:单项选择题

题目:

乳癌根治术属于()。

A.择期手术

B.限期手术

C.急症手术

D.诊断性手术

E.姑息性手术

答案:

参考答案:B

解析:[知识点] 手术分类及其特点

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题型:阅读理解
阅读下面短文,根据其内容,完成表格中所缺的信息。
Some people prefer to make friends with people who are very much like them while others prefer friends who are very different. There are advantages to both types of friendship. If a man chooses a friend similar to himself, there is no problem that they will share many common interests. They may have similar goals in life. This means that they will be able to help each other in achieving their goals. Two people who are very similar will feel comfortable with each other and may understand each other' s feelings better. Their friendship may be deeper and last longer.
There are also many advantages of making friends with someone of opposite interests and even character. In this type of friendship, the two people complement (补充) each other. If one is weak in some ways, the other is strong. While two people with similar goals may find themselves in competition, hut those who want different things can always support each other. Those who have different interests can introduce each other to new experience and so enrich (丰富) their knowledge.
A friend who is unlike me may be challenging, but a similar friend is familiar and safe.
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Friends
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One type of friendship
 
Similar to each other
l Share common interests.
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l Be  7 for their goals
l Friendship lasts longer.
 
The other type of friendship
 
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l Complement each other.
l Support each other.
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Topic:  9 
Author’s attitude:Preferring    10 
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某课外小组设计了一种测定风速的装置,其原理如图所示,一个劲度系数k=120 N/m,自然长度10=1m弹簧一端固定在墙上的M点,另一端N与导电的迎风板相连,弹簧穿在光滑水平放置的电阻率较大的金属杆上,弹簧是不导电的材料制成的。迎风板面积s=0.5 m2,工作时总是正对着风吹来的方向,电路的一端与迎风板相连,另一端在M点与金属杆相连,迎风板可在金属杆上滑动,且与金属杆接触良好,定值电阻R=1.0Ω,电源的电动势E=12 V,内阻r=0.5Ω。闭合开关,没有风吹时,弹簧处于原长,电压表的示数U1=9.0 V,某时刻由于风吹迎风板,电压表的示数变为U2=6.0V(电压表可看作理想表)。求:

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