关于桌面上的图标，下面说法正确的是（）。A.数目不可变，位置可变 B.数目和位置是固

A recent poll indicated that half the teenagers in the United States believe that communication between them and their parents is (1) and further that one of the prime causes of this gap is (2) listening behavior. As a(an) (3) in point, one parent believed that her daughter had a severe (4) problem. She was so (5) that she took her to an audiologist to have her ear tested. The audiologist carefully tested both ears and reported back to the parent:"There’s nothing wrong with her hearing. She’s just (6) you out. "

A leading cause of the (7) divorce rate (more than half of all marriages end in divorce) is the failure of husbands and wives to (8) effectively. They don’t listen to each other. Neither person (9) to the actual message sent by the other.

In (10) fashion, political scientists report that a growing number of people believe that their elected and (11) officials are out of (12) with the constituents they are supposedly (13) Why Because they don’t believe that they listen to them. In fact, it seems that sometimes our politicians don’t even listen to themselves. The following is a true story: At a national (14) conference held in Albuquerque some years ago, then Senator Joseph Montoya was (15) a copy of a press release by a press aide shortly before he got up before the audience to (16) a speech. When he rose to speak, (17) the horror of the press aide and the (18) of his audience, Montoya began reading the press release, not his speech. He began, "For immediate release. Senator Joseph M. Montoya, Democrat of New Mexico, last night told the National... " Montoya read the entire six page release, (19) with the statement that he "was repeatedly (20) by applause.

14（）

A.legislative

B.legitimate

C.legalized

D.liberal

科学家已经证明密码子是mRNA上决定一个氨基酸的三个相邻碱基。以下是遗传密码破译过程的几个阶段。

(1)根据理论推测，mRNA上的三个相邻的碱基可以构成____________种排列方式，实际上mRNA上决定氨基酸的密码子共有____________种。

(2)1961年，尼伦伯格和马太成功建立了体外蛋白质合成系统，破译了第一个密码子：苯丙氨酸(UUU)。具体的做法是在代表“体外蛋白质合成系统”的20支试管中各加入作为模板(mRNA)的多聚尿嘧啶核苷酸（即只由U组成的mRNA），再向20支试管中分别加入20种氨基酸中的一种，结果只有加入苯丙氨酸的试管中出现了多聚苯丙氨酸肽链。体外蛋白质合成系统中除了加入全套必要的酶系统、tRNA、人工合成的mRNA和氨基酸外，还需提供____________。

(3)上述实验后，又有科学家用C、U两种碱基相间排列的mRNA为模板，检验一个密码子是否含有3个碱基。假设密码子是连续翻译的：①假如一个密码子中含有2个或4个碱基，则该RNA指导合成的多肽链中应由________种氨基酸组成。②假如一个密码子中含有3个碱基，则该RNA指导合成的多肽链中应由________种氨基酸组成。

(4)1964年又有科学家用2个、3个或4个碱基为单位的重复序列，最终破译了全部密码子，包括终止密码。下表是部分实验：

说明：表中(UC)n表示“UCUCUCUCUCUC……”这样的重复mRNA序列。请分析上表后推测下列氨基酸的密码子：亮氨酸为____________、____________；丝氨酸为________；苯丙氨酸为____________。

根据国家有关规定，竣工决算分大型建设项目和小型建设项目进行编制。( )

税务代理

腹部检查