核素显像技术的优势是()A．影像分辨率高 B．价格便宜 C．可显示脏器功能 D．无辐

Read and judge。(读短文，判断下列句子是否正确，正确的画“√”，错误的画“×”）    

     Hello. This is a giraffe. It has some friends: the rabbit, the snake, the elephant and the monkey.

Do you know why (为什么) they are friends? Because they are all "long". The giraffe has a long

neck (脖子). The rabbit has long ears. The snake has a long body.  The elephant has a long nose

and the monkey has a long tail.   

( )1. The giraffe has a long nose.

(     )2. The elephant has long ears.

(     )3.  The snake has a long body.

(     )4. The rabbit has long ears.

根据所给情境，按要求表达。

（1）公共汽车上，手拎一个大提包的你，想要往里面走，你会对过道上的其他乘客说些什么？

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（2）在车上，你见到了小学同学兰兰，她的妈妈是你小学时的班主任王老师，你怎样跟兰兰打招呼，并委托她转达对王老师的问候？

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Research studies show that there are some fundamental (1) between men and women in their attitudes to (2) matters. Women are far more likely to save for their children’s (3) and to save up to buy a (4) . Men tend to save for a (5) , and for their (6) . But in fact the need for women to save for their old age is far (7) than for men. Throughout the world, women are likely to live many years (8) than men. Furthermore it is the (9) women who will most often have to look after the children and thus they need more (10) to look after not just themselves but others. Women today need to look ahead, think ahead, not wait until they’re under (11) .
A number of (12) have been set up to help them do this. Some educational institutions offer night (13) in Money (14) . They can be given (15) on different ways of saving. It is usually advised that at least (16) of a person’s savings should be in low-risk investments but for the rest, (17) advisors often advise taking some (18) risks. Initiatives such as this can give women the economic (19) and knowledge they need for a comfortable, (20) retirement.

简述具体法律关系的特征。

在刮削另一段床身结合面时，其（）误差方向应相反，使这两段导轨彼此联接后，导轨的直线度误差更加趋于平缓。

A.直线度

B.平行度

C.垂直度

D.平面度