下列关于SLE描述不正确的是A．补体C3升高 B．抗Sm抗体特异性高达99% C．约

数据库管理系统的数据操纵语言(DML)所实现的操作一般包括
A) 建立、授权、修改
B) 建立、授权、删除
C) 建立、插入、修改、排序
D) 查询、插入、修改、删除

提升钢丝绳新绳悬挂前，每根钢丝做拉断、弯曲、扭转试验。这三项指标按公称直径计算，当不合格钢丝的断面积和总断面积之比，升降物料的达（）时，都不得使用。

A、5％

B、6％

C、10％

D

Dear Michelle,

My mother is not a good example for me and my sister. She smokes, stays out late, and she curses(骂人).I love her but I am ashamed of her.I do not want to bring my friends home because she does not act like any of the other mothers. She says I am a loser because I sit at home and study. I wish I could live in another family that was normal,but it will be 5 years before I am 18 and legal. What am I supposed to do until then?

Prisoner of a Crazy House

Dear 7th Grader,

I am glad that you love your mother because the rest of your feeings about her may change as you get older and mature(成熟).

While it is true that your mother’s smoking, partying and cursing bring you shame, the fact that you want to stay separate from her doings is notable and very smart. It shows that you are a winner,not a loser.

I am guessing, therefore, that you do not bring shame to yourself, and that is a good thing, So,keep it that way and keep away from your mother’s habits.

At the same time,try to get the best grades and join clubs and school activities. Offer social service on weekends and visit your friends at their homes.

Unfortunately, you are not alone.Many teens live in homes with immature,misguided, selfish parents. Those kids often feel lonely and separate from the rest of their friends because of their parents’ terrible deeds.

But they develop good friendships with nice kids, do well in school,and often find a teacher or guidance advisor who makes all the difference!

Do it, Miss Winning 13 years old, and keep looking forward to your own fine future.Maybe by then your mother may even see the light and realize how surprising you really are.

Best luck!

Michelle

64.The kid asks for advice on how to___________.

A.make her mother change                                B.deal with her situation

C.get along well with her mother                       D.start a new family

65.Michelle doesn’t address her letter receiver as“Prisoner of a Crazy House”possibly because she

__________.

A.tries to be polite                                       B.doesn’t write to the kid alone

C.knows that’s a girl in Grade 7                         D.wants to cheer the kid up

66.According to the passage, Michelle advises the girl to_________.

A.try talking to her mother for her future

B.stick to her attitude towards her mother’s some habits

C.understand her mother’s habits and get used to them

D.try to keep away from her mother

67.What does Michelle mainly express by writing the last four paragraphs?

A.Don’t worry too much about the problem.

B.Many parents act terribly.

C.Parents manners make little difference.

D.The girl is not speaking for herself.

丝柏可通脉活血，有助改善（），收缩血管，并有助排泄系统的通畅，利尿。对上呼吸道感染、伤风咳嗽都有疗效。

抗粘着剂的主要作用是

A．改善颗粒填充状态
B．降低颗粒对冲模的粘附性
C．降低颗粒间的摩擦力
D．降低冲头与模孔壁间的摩擦力
E．改善力的传递与分布