_______是人体中最坚硬的器官,构成它的主要部分是________,如果人患

题型:填空题

问题:

_______是人体中最坚硬的器官,构成它的主要部分是________,如果人患了龋齿,伤到_______,病菌侵入,引起发炎,会十分疼痛,这是因为其中含有_______。

考点:消化系统的组成和功能
题型:填空题

已知|x|=3,|y|=7,且 xy<0,则 x+y的值等于______.

题型:填空题

什么是消防装备管理:是对消防器材设备的计划、协调、组织和()。

A.控制

B.维修

C.维护

D.采购

题型:填空题

元素周期表是学习化学的重要工具,如图是元素周期表中的一格,从该图中,我们获取的相关信息中错误的是(  )。

A.该元素的名称是钠

B.该元素的原子序数为11

C.该元素的地壳中的含量为22.99%

D.该元素的元素符号为Na

题型:填空题

在反应系统加入何种物质可以提高工具酶的米氏常数()

A.重金属离子

B.竞争性抑制剂

C.非竞争性抑制剂

D.竞争和非竞争性抑制剂均可

E.表面活性剂

题型:填空题

Most people agree that the direct, assertive(过分自信的) American personality is a virtue, but it sometimes surprises foreigners. In many cultures, respect for older people or those in positions of authority keeps others from expressing their true feelings. But in the U.S, children often argue with their parents, students may disagree with their teachers, and citizens may express opposition to the actions of the government. If the soup has a fly in it or the meat is too tough to chew, the diner can complain to the waiter, if the boss makes a mistake, an employee will politely point it out.

Some straight talk about the American character must include the admission that Americans have their faults. The extremely competitive nature of Americans is probably their worst fault. Of course, competition isn’t always bad. As a matter of fact, it promotes excellence by encouraging individuals and businesses to try to do their best. But the desire to get ahead of others sometimes causes people to do things that are unkind and even dishonest. Also, Americans admire what is practical, fast, efficient, and fresh. Sometimes they fail to understand and appreciate practices that have greater respect for more traditional, leisurely ways of doing things. On the other hand, people from other cultures may dislike the practical, challenging American lifestyle.

Despite culture differences, most foreigners give Americans credit for their virtues. Americans are generally viewed as friendly, adaptable, energetic, and kindhearted. Most newcomers to the U.S. like Americans, and the feeling is usually mutual. Perhaps the greatest American virtue is a deep interest in new ideas and new people. In a nation of immigrants, the foreigner does not remain an outsider for long.

73.Find a word in the last paragraph closest in meaning to the underlined word immigrant?

74.Why is the extremely competitive nature considered as one of American faults?(不超过10个词)

75.What does the passage mainly talks about? (不超过2个词)

更多题库