半导体存储器的存取方式有（）。 A.顺序存取 B.直接存取 C.随机存取 D.只读存

Last year my sixth-grader daughter ,Elizabeth ,was forced to put up with science .Her education week after week ,contained mindless memorization of big words like “batholith” and “saprophyte” She learned by heart the achievements of famous scientists who did things like “improved nuclear fu-sion（核聚变） “—never mind that she hasn’t the least idea of what nuclear fusion means .Eliza—beth did very well (she’s good at memorizing things ). And now she hates science .My eighth-grader son ,Ben ,also suffered from science education . Week after week he had to perform lab experiments with answers already known .Ben figured out how to guess the right answers ,so he got good grades .Now he hates science ,too.

Science can provide an exciting way to develop children’s curiosity .Science education should teach ways to ask questions and week answers .But my children got the mistaken idea in school than science is difficult dull and has no relation to their everyday interests .

As a physicist ,I am saddened and angered to see “the great science turnoff” I know that science is important in our lives .Yet studies prove that our schools are turning out millions of graduates who know almost nothing about and have almost no interest in science .What’s gone wrong ?Who is to blame ?

58．We learn from paragraph 1 that           .

A．the writer was proud of Elizabeth and Ben

B．both Elizabeth and Ben could become scientists

C．Elizabeth had to learn much about great scientists

D．Ben was good at trying new ideas in lab experiments

59．The writer thinks that in science education we should first        .

A．get students interested in the subject         B．answer students’ questions in delightful ways.

C．smooth out difficulties in lab experiments     D．explain the special terms clearly

60．By writing the text ,the author questions          .

A．the difficulty level of the science texts        B．the way science is taught in school

C．the achievements of famous scientists            D．students’ poor records in science classes

现有一群处于n＝4能级上的氢原子，已知氢原子的基态能量E₁＝－13.6eV，这群氢原子发光的光谱共有________条谱线，发出的光子照射某金属能产生光电效应现象，则该金属的逸出功最大值是________eV.

操作以下哪一项交易关联存款证实书？（）

A.“[021051]内部账转无折客户账“

B.“[000501]发放/重发定期存单“

C.“[000500]补换发存折“

D.“[062000]开户入口“

建筑钢材在存放和使用中发生锈蚀的主要形式是( )。

A．化学锈蚀
B．电化学锈蚀
C．水化反应
D．氧化反应

下列有关代表人的说法哪些是正确的？（）

A.多个申请人以书面形式提出专利申请且未委托专利代理机构的，除请求书中另有声明的外，以请求书中指明的第一申请人为代表人

B.多个申请人提出电子申请且未委托专利代理机构的，以提交电子申请的电子申请用户为代表人

C.申请人为单位的，其联系人为代表人

D.代表人可以代表全体申请人办理撤回专利申请的手续